10010021121220 has 24 divisors (see below), whose sum is σ = 21021317025408. Its totient is φ = 4003956511200.

The previous prime is 10010021121211. The next prime is 10010021121223. The reversal of 10010021121220 is 2212112001001.

It is a self number, because there is not a number n which added to its sum of digits gives 10010021121220.

It is not an unprimeable number, because it can be changed into a prime (10010021121223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1646446 + ... + 4767685.

It is an arithmetic number, because the mean of its divisors is an integer number (875888209392).

Almost surely, 2^{10010021121220} is an apocalyptic number.

10010021121220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10010021121220 is an abundant number, since it is smaller than the sum of its proper divisors (11011295904188).

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

10010021121220 is a wasteful number, since it uses less digits than its factorization.

10010021121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6492171 (or 6492169 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 10010021121220 its reverse (2212112001001), we get a palindrome (12222133122221).

The spelling of 10010021121220 in words is "ten trillion, ten billion, twenty-one million, one hundred twenty-one thousand, two hundred twenty".