21210101011122 has 64 divisors (see below), whose sum is σ = 43151267427840. Its totient is φ = 6949253735424.

The previous prime is 21210101011039. The next prime is 21210101011153. The reversal of 21210101011122 is 22111010101212.

It is a happy number.

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, 61168228 + ... + 61514000.

It is an arithmetic number, because the mean of its divisors is an integer number (674238553560).

Almost surely, 2^{21210101011122} is an apocalyptic number.

21210101011122 is an abundant number, since it is smaller than the sum of its proper divisors (21941166416718).

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

21210101011122 is a wasteful number, since it uses less digits than its factorization.

21210101011122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346547.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 21210101011122 its reverse (22111010101212), we get a palindrome (43321111112334).

The spelling of 21210101011122 in words is "twenty-one trillion, two hundred ten billion, one hundred one million, eleven thousand, one hundred twenty-two".