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1020210202220 = 225118952104709
BaseRepresentation
bin11101101100010010100…
…01000100011001101100
310121112100012111001222012
432312021101010121230
5113203342302432340
62100402245140352
7133464521431256
oct16661121043154
93545305431865
101020210202220
1136373a075a60
121458823ba6b8
1375289390391
1437542608cd6
151b810ba4565
hexed8944466c

1020210202220 has 48 divisors (see below), whose sum is σ = 2363469645600. Its totient is φ = 366817144320.

The previous prime is 1020210202177. The next prime is 1020210202241. The reversal of 1020210202220 is 222020120201.

It is a junction number, because it is equal to n+sod(n) for n = 1020210202195 and 1020210202204.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26032775 + ... + 26071934.

It is an arithmetic number, because the mean of its divisors is an integer number (49238950950).

Almost surely, 21020210202220 is an apocalyptic number.

1020210202220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020210202220 is an abundant number, since it is smaller than the sum of its proper divisors (1343259443380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1020210202220 is a wasteful number, since it uses less digits than its factorization.

1020210202220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52104818 (or 52104816 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 1020210202220 its reverse (222020120201), we get a palindrome (1242230322421).

The spelling of 1020210202220 in words is "one trillion, twenty billion, two hundred ten million, two hundred two thousand, two hundred twenty".

Divisors: 1 2 4 5 10 11 20 22 44 55 89 110 178 220 356 445 890 979 1780 1958 3916 4895 9790 19580 52104709 104209418 208418836 260523545 521047090 573151799 1042094180 1146303598 2292607196 2865758995 4637319101 5731517990 9274638202 11463035980 18549276404 23186595505 46373191010 51010510111 92746382020 102021020222 204042040444 255052550555 510105101110 1020210202220