21022111012022 has 4 divisors (see below), whose sum is σ = 31533166518036. Its totient is φ = 10511055506010.

The previous prime is 21022111012009. The next prime is 21022111012037. The reversal of 21022111012022 is 22021011122012.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5255527753004 + ... + 5255527753007.

It is an arithmetic number, because the mean of its divisors is an integer number (7883291629509).

Almost surely, 2^{21022111012022} is an apocalyptic number.

21022111012022 is a deficient number, since it is larger than the sum of its proper divisors (10511055506014).

21022111012022 is a wasteful number, since it uses less digits than its factorization.

21022111012022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10511055506013.

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

Adding to 21022111012022 its reverse (22021011122012), we get a palindrome (43043122134034).

The spelling of 21022111012022 in words is "twenty-one trillion, twenty-two billion, one hundred eleven million, twelve thousand, twenty-two".