21120202022022 has 96 divisors (see below), whose sum is σ = 46820695615200. Its totient is φ = 6878102999040.

The previous prime is 21120202022011. The next prime is 21120202022041. The reversal of 21120202022022 is 22022020202112.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 21120202021986 and 21120202022004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 448950822 + ... + 448997862.

It is an arithmetic number, because the mean of its divisors is an integer number (487715579325).

Almost surely, 2^{21120202022022} is an apocalyptic number.

21120202022022 is an abundant number, since it is smaller than the sum of its proper divisors (25700493593178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21120202022022 is a wasteful number, since it uses less digits than its factorization.

21120202022022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49078 (or 49075 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 21120202022022 its reverse (22022020202112), we get a palindrome (43142222224134).

The spelling of 21120202022022 in words is "twenty-one trillion, one hundred twenty billion, two hundred two million, twenty-two thousand, twenty-two".