21112220202022 has 16 divisors (see below), whose sum is σ = 31672995157440. Its totient is φ = 10554555290112.

The previous prime is 21112220202011. The next prime is 21112220202049. The reversal of 21112220202022 is 22020202221112.

It is a congruent number.

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, 659143504 + ... + 659175532.

It is an arithmetic number, because the mean of its divisors is an integer number (1979562197340).

Almost surely, 2^{21112220202022} is an apocalyptic number.

21112220202022 is a deficient number, since it is larger than the sum of its proper divisors (10560774955418).

21112220202022 is a wasteful number, since it uses less digits than its factorization.

21112220202022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70287.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 21112220202022 its reverse (22020202221112), we get a palindrome (43132422423134).

The spelling of 21112220202022 in words is "twenty-one trillion, one hundred twelve billion, two hundred twenty million, two hundred two thousand, twenty-two".