21021200012202 has 32 divisors (see below), whose sum is σ = 46837687034880. Its totient is φ = 6245024936640.

The previous prime is 21021200012159. The next prime is 21021200012203. The reversal of 21021200012202 is 20221000212012.

It is a super-3 number, since 3×21021200012202³ (a number of 41 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (21021200012203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4646593674 + ... + 4646598197.

It is an arithmetic number, because the mean of its divisors is an integer number (1463677719840).

Almost surely, 2^{21021200012202} is an apocalyptic number.

21021200012202 is an abundant number, since it is smaller than the sum of its proper divisors (25816487022678).

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

21021200012202 is a wasteful number, since it uses less digits than its factorization.

21021200012202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9293191918.

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

Adding to 21021200012202 its reverse (20221000212012), we get a palindrome (41242200224214).

The spelling of 21021200012202 in words is "twenty-one trillion, twenty-one billion, two hundred million, twelve thousand, two hundred two".