21212012020002 has 16 divisors (see below), whose sum is σ = 44268546824640. Its totient is φ = 6763250209232.

The previous prime is 21212012019973. The next prime is 21212012020027. The reversal of 21212012020002 is 20002021021212.

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, 76855115877 + ... + 76855116152.

It is an arithmetic number, because the mean of its divisors is an integer number (2766784176540).

Almost surely, 2^{21212012020002} is an apocalyptic number.

21212012020002 is an abundant number, since it is smaller than the sum of its proper divisors (23056534804638).

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

21212012020002 is a wasteful number, since it uses less digits than its factorization.

21212012020002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153710232057.

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

Adding to 21212012020002 its reverse (20002021021212), we get a palindrome (41214033041214).

The spelling of 21212012020002 in words is "twenty-one trillion, two hundred twelve billion, twelve million, twenty thousand, two".