21112121022022 has 16 divisors (see below), whose sum is σ = 31819404614400. Its totient is φ = 10505656392840.

The previous prime is 21112121022007. The next prime is 21112121022049. The reversal of 21112121022022 is 22022012121112.

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, 11121679 + ... + 12880837.

It is an arithmetic number, because the mean of its divisors is an integer number (1988712788400).

Almost surely, 2^{21112121022022} is an apocalyptic number.

21112121022022 is a deficient number, since it is larger than the sum of its proper divisors (10707283592378).

21112121022022 is a wasteful number, since it uses less digits than its factorization.

21112121022022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1787811.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 21112121022022 its reverse (22022012121112), we get a palindrome (43134133143134).

The spelling of 21112121022022 in words is "twenty-one trillion, one hundred twelve billion, one hundred twenty-one million, twenty-two thousand, twenty-two".