21210120001122 has 32 divisors (see below), whose sum is σ = 45741382959552. Its totient is φ = 6517898259264.

The previous prime is 21210120001117. The next prime is 21210120001349. The reversal of 21210120001122 is 22110002101212.

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, 172698853 + ... + 172821624.

It is an arithmetic number, because the mean of its divisors is an integer number (1429418217486).

Almost surely, 2^{21210120001122} is an apocalyptic number.

21210120001122 is an abundant number, since it is smaller than the sum of its proper divisors (24531262958430).

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

21210120001122 is a wasteful number, since it uses less digits than its factorization.

21210120001122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345521282.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21210120001122 its reverse (22110002101212), we get a palindrome (43320122102334).

The spelling of 21210120001122 in words is "twenty-one trillion, two hundred ten billion, one hundred twenty million, one thousand, one hundred twenty-two".