21012202020002 has 8 divisors (see below), whose sum is σ = 31534882890012. Its totient is φ = 10500574390000.

The previous prime is 21012202019981. The next prime is 21012202020037. The reversal of 21012202020002 is 20002020221012.

It can be written as a sum of positive squares in 2 ways, for example, as 19157700056401 + 1854501963601 = 4376951^2 + 1361801^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21012202020002² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2763305249 + ... + 2763312852.

Almost surely, 2^{21012202020002} is an apocalyptic number.

21012202020002 is a deficient number, since it is larger than the sum of its proper divisors (10522680870010).

21012202020002 is a wasteful number, since it uses less digits than its factorization.

21012202020002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5526620004.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 21012202020002 its reverse (20002020221012), we get a palindrome (41014222241014).

The spelling of 21012202020002 in words is "twenty-one trillion, twelve billion, two hundred two million, twenty thousand, two".