21120211201202 has 4 divisors (see below), whose sum is σ = 31680316801806. Its totient is φ = 10560105600600.

The previous prime is 21120211201181. The next prime is 21120211201247. The reversal of 21120211201202 is 20210211202112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 19984646035561 + 1135565165641 = 4470419^2 + 1065629^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5280052800299 + ... + 5280052800302.

Almost surely, 2^{21120211201202} is an apocalyptic number.

21120211201202 is a deficient number, since it is larger than the sum of its proper divisors (10560105600604).

21120211201202 is a wasteful number, since it uses less digits than its factorization.

21120211201202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10560105600603.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21120211201202 its reverse (20210211202112), we get a palindrome (41330422403314).

The spelling of 21120211201202 in words is "twenty-one trillion, one hundred twenty billion, two hundred eleven million, two hundred one thousand, two hundred two".