21212002000122 has 16 divisors (see below), whose sum is σ = 43458735805632. Its totient is φ = 6898212032480.

The previous prime is 21212002000093. The next prime is 21212002000141. The reversal of 21212002000122 is 22100020021212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43113824958 + ... + 43113825449.

It is an arithmetic number, because the mean of its divisors is an integer number (2716170987852).

Almost surely, 2^{21212002000122} is an apocalyptic number.

21212002000122 is an abundant number, since it is smaller than the sum of its proper divisors (22246733805510).

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

21212002000122 is a wasteful number, since it uses less digits than its factorization.

21212002000122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86227650453.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 21212002000122 its reverse (22100020021212), we get a palindrome (43312022021334).

The spelling of 21212002000122 in words is "twenty-one trillion, two hundred twelve billion, two million, one hundred twenty-two", and thus it is an aban number.