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10102222220 = 225717114241
BaseRepresentation
bin10010110100010001…
…11010110110001100
3222002001010001122112
421122020322312030
5131142132102340
64350233403152
7505225320626
oct113210726614
928061101575
1010102222220
114314494092
121b5b2694b8
13c4cc2b5ac
146bb971c16
153e1d51065
hex25a23ad8c

10102222220 has 24 divisors (see below), whose sum is σ = 21513467808. Its totient is φ = 3983974400.

The previous prime is 10102222211. The next prime is 10102222231. The reversal of 10102222220 is 2222220101.

It is a junction number, because it is equal to n+sod(n) for n = 10102222195 and 10102222204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3555701 + ... + 3558540.

It is an arithmetic number, because the mean of its divisors is an integer number (896394492).

Almost surely, 210102222220 is an apocalyptic number.

10102222220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10102222220 is an abundant number, since it is smaller than the sum of its proper divisors (11411245588).

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

10102222220 is a wasteful number, since it uses less digits than its factorization.

10102222220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7114321 (or 7114319 counting only the distinct ones).

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

Adding to 10102222220 its reverse (2222220101), we get a palindrome (12324442321).

The spelling of 10102222220 in words is "ten billion, one hundred two million, two hundred twenty-two thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 71 142 284 355 710 1420 7114241 14228482 28456964 35571205 71142410 142284820 505111111 1010222222 2020444444 2525555555 5051111110 10102222220