21120222112010 has 32 divisors (see below), whose sum is σ = 43474760474112. Its totient is φ = 7236644607360.

The previous prime is 21120222112009. The next prime is 21120222112019. The reversal of 21120222112010 is 1021122202112.

It is a super-2 number, since 2×21120222112010² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 21120222112010.

It is not an unprimeable number, because it can be changed into a prime (21120222112019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95188451 + ... + 95410070.

It is an arithmetic number, because the mean of its divisors is an integer number (1358586264816).

Almost surely, 2^{21120222112010} is an apocalyptic number.

21120222112010 is an abundant number, since it is smaller than the sum of its proper divisors (22354538362102).

21120222112010 is a wasteful number, since it uses less digits than its factorization.

21120222112010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190600118.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21120222112010 its reverse (1021122202112), we get a palindrome (22141344314122).

The spelling of 21120222112010 in words is "twenty-one trillion, one hundred twenty billion, two hundred twenty-two million, one hundred twelve thousand, ten".