10621292220 has 576 divisors, whose sum is σ = 43136271360. Its totient is φ = 2048716800.

The previous prime is 10621292219. The next prime is 10621292243. The reversal of 10621292220 is 2229212601.

It is a happy number.

10621292220 is a `hidden beast` number, since 10 + 621 + 2 + 9 + 2 + 2 + 20 = 666.

It is a super-2 number, since 2×10621292220² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 13956640 + ... + 13957400.

It is an arithmetic number, because the mean of its divisors is an integer number (74889360).

Almost surely, 2^10621292220 is an apocalyptic number.

10621292220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10621292220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21568135680).

10621292220 is an abundant number, since it is smaller than the sum of its proper divisors (32514979140).

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

10621292220 is a wasteful number, since it uses less digits than its factorization.

10621292220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866 (or 861 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The spelling of 10621292220 in words is "ten billion, six hundred twenty-one million, two hundred ninety-two thousand, two hundred twenty".