21022121111110 has 32 divisors (see below), whose sum is σ = 43731410863680. Its totient is φ = 7126600284672.

The previous prime is 21022121111071. The next prime is 21022121111137. The reversal of 21022121111110 is 1111112122012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1687162399 + ... + 1687174858.

It is an arithmetic number, because the mean of its divisors is an integer number (1366606589490).

Almost surely, 2^{21022121111110} is an apocalyptic number.

21022121111110 is an abundant number, since it is smaller than the sum of its proper divisors (22709289752570).

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

21022121111110 is a wasteful number, since it uses less digits than its factorization.

21022121111110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3374337360.

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

Adding to 21022121111110 its reverse (1111112122012), we get a palindrome (22133233233122).

The spelling of 21022121111110 in words is "twenty-one trillion, twenty-two billion, one hundred twenty-one million, one hundred eleven thousand, one hundred ten".