21211203474202 has 32 divisors (see below), whose sum is σ = 36399003281280. Its totient is φ = 9081285135360.

The previous prime is 21211203474193. The next prime is 21211203474229. The reversal of 21211203474202 is 20247430211212.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58256574 + ... + 58619542.

It is an arithmetic number, because the mean of its divisors is an integer number (1137468852540).

Almost surely, 2^{21211203474202} is an apocalyptic number.

21211203474202 is a deficient number, since it is larger than the sum of its proper divisors (15187799807078).

21211203474202 is a wasteful number, since it uses less digits than its factorization.

21211203474202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367206.

The product of its (nonzero) digits is 10752, while the sum is 31.

Adding to 21211203474202 its reverse (20247430211212), we get a palindrome (41458633685414).

The spelling of 21211203474202 in words is "twenty-one trillion, two hundred eleven billion, two hundred three million, four hundred seventy-four thousand, two hundred two".