21011122202 has 16 divisors (see below), whose sum is σ = 36023919360. Its totient is φ = 9003553488.

The previous prime is 21011122159. The next prime is 21011122211. The reversal of 21011122202 is 20222111012.

It is a Harshad number since it is a multiple of its sum of digits (14).

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, 10799 + ... + 205277.

It is an arithmetic number, because the mean of its divisors is an integer number (2251494960).

Almost surely, 2^21011122202 is an apocalyptic number.

21011122202 is a deficient number, since it is larger than the sum of its proper divisors (15012797158).

21011122202 is a wasteful number, since it uses less digits than its factorization.

21011122202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202205.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21011122202 its reverse (20222111012), we get a palindrome (41233233214).

The spelling of 21011122202 in words is "twenty-one billion, eleven million, one hundred twenty-two thousand, two hundred two".