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22012210040 = 235550305251
BaseRepresentation
bin10100100000000001…
…111010101101111000
32002211001212010111112
4110200001322231320
5330040111210130
614040130015452
71406324461322
oct244001725570
962731763445
1022012210040
119376356227
124323a17588
1320ca538772
1410cb63c612
1588c741495
hex52007ab78

22012210040 has 16 divisors (see below), whose sum is σ = 49527472680. Its totient is φ = 8804884000.

The previous prime is 22012210039. The next prime is 22012210123. The reversal of 22012210040 is 4001221022.

It is a junction number, because it is equal to n+sod(n) for n = 22012209997 and 22012210024.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275152586 + ... + 275152665.

Almost surely, 222012210040 is an apocalyptic number.

22012210040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22012210040 is an abundant number, since it is smaller than the sum of its proper divisors (27515262640).

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

22012210040 is a wasteful number, since it uses less digits than its factorization.

22012210040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550305262 (or 550305258 counting only the distinct ones).

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

Adding to 22012210040 its reverse (4001221022), we get a palindrome (26013431062).

The spelling of 22012210040 in words is "twenty-two billion, twelve million, two hundred ten thousand, forty".

Divisors: 1 2 4 5 8 10 20 40 550305251 1100610502 2201221004 2751526255 4402442008 5503052510 11006105020 22012210040