21022121112010 has 64 divisors (see below), whose sum is σ = 40294147963392. Its totient is φ = 7869203629056.

The previous prime is 21022121112001. The next prime is 21022121112049. The reversal of 21022121112010 is 1021112122012.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21803052 + ... + 22746808.

It is an arithmetic number, because the mean of its divisors is an integer number (629596061928).

Almost surely, 2^{21022121112010} is an apocalyptic number.

21022121112010 is a deficient number, since it is larger than the sum of its proper divisors (19272026851382).

21022121112010 is a wasteful number, since it uses less digits than its factorization.

21022121112010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 944527.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21022121112010 its reverse (1021112122012), we get a palindrome (22043233234022).

The spelling of 21022121112010 in words is "twenty-one trillion, twenty-two billion, one hundred twenty-one million, one hundred twelve thousand, ten".