21022120111010 has 16 divisors (see below), whose sum is σ = 37846296835200. Its totient is φ = 8407407903216.

The previous prime is 21022120111009. The next prime is 21022120111019. The reversal of 21022120111010 is 1011102122012.

It is not an unprimeable number, because it can be changed into a prime (21022120111019) 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, 179956340 + ... + 180073119.

It is an arithmetic number, because the mean of its divisors is an integer number (2365393552200).

Almost surely, 2^{21022120111010} is an apocalyptic number.

21022120111010 is a deficient number, since it is larger than the sum of its proper divisors (16824176724190).

21022120111010 is a wasteful number, since it uses less digits than its factorization.

21022120111010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360035305.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21022120111010 its reverse (1011102122012), we get a palindrome (22033222233022).

The spelling of 21022120111010 in words is "twenty-one trillion, twenty-two billion, one hundred twenty million, one hundred eleven thousand, ten".