21120111102022 has 4 divisors (see below), whose sum is σ = 31680166653036. Its totient is φ = 10560055551010.

The previous prime is 21120111101987. The next prime is 21120111102179. The reversal of 21120111102022 is 22020111102112.

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

It is a junction number, because it is equal to n+sod(n) for n = 21120111101987 and 21120111102005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5280027775504 + ... + 5280027775507.

It is an arithmetic number, because the mean of its divisors is an integer number (7920041663259).

Almost surely, 2^{21120111102022} is an apocalyptic number.

21120111102022 is a deficient number, since it is larger than the sum of its proper divisors (10560055551014).

21120111102022 is a wasteful number, since it uses less digits than its factorization.

21120111102022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10560055551013.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21120111102022 its reverse (22020111102112), we get a palindrome (43140222204134).

The spelling of 21120111102022 in words is "twenty-one trillion, one hundred twenty billion, one hundred eleven million, one hundred two thousand, twenty-two".