21120020111202 has 16 divisors (see below), whose sum is σ = 42244140126720. Its totient is φ = 7039323386352.

The previous prime is 21120020111171. The next prime is 21120020111231. The reversal of 21120020111202 is 20211102002112.

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, 170762377 + ... + 170886012.

It is an arithmetic number, because the mean of its divisors is an integer number (2640258757920).

Almost surely, 2^{21120020111202} is an apocalyptic number.

21120020111202 is an abundant number, since it is smaller than the sum of its proper divisors (21124120015518).

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

21120020111202 is a wasteful number, since it uses less digits than its factorization.

21120020111202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341658697.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21120020111202 its reverse (20211102002112), we get a palindrome (41331122113314).

The spelling of 21120020111202 in words is "twenty-one trillion, one hundred twenty billion, twenty million, one hundred eleven thousand, two hundred two".