22210020002120 has 16 divisors (see below), whose sum is σ = 49972545004860. Its totient is φ = 8884008000832.

The previous prime is 22210020002111. The next prime is 22210020002143. The reversal of 22210020002120 is 2120002001222.

It can be written as a sum of positive squares in 2 ways, for example, as 19635657513796 + 2574362488324 = 4431214^2 + 1604482^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22210020002095 and 22210020002104.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277625249987 + ... + 277625250066.

Almost surely, 2^{22210020002120} is an apocalyptic number.

22210020002120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22210020002120 is an abundant number, since it is smaller than the sum of its proper divisors (27762525002740).

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

22210020002120 is a wasteful number, since it uses less digits than its factorization.

22210020002120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555250500064 (or 555250500060 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 22210020002120 its reverse (2120002001222), we get a palindrome (24330022003342).

The spelling of 22210020002120 in words is "twenty-two trillion, two hundred ten billion, twenty million, two thousand, one hundred twenty".