222120012021210 has 48 divisors (see below), whose sum is σ = 591597690563880. Its totient is φ = 57787320199680.

The previous prime is 222120012021191. The next prime is 222120012021221. The reversal of 222120012021210 is 12120210021222.

It is a happy number.

222120012021210 is a `hidden beast` number, since 2 + 221 + 200 + 1 + 20 + 212 + 10 = 666.

222120012021210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 69302278390401 + 152817733630809 = 8324799^2 + 12361947^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30097558915 + ... + 30097566294.

Almost surely, 2^{222120012021210} is an apocalyptic number.

222120012021210 is an abundant number, since it is smaller than the sum of its proper divisors (369477678542670).

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

222120012021210 is a wasteful number, since it uses less digits than its factorization.

222120012021210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60195125263 (or 60195125260 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 222120012021210 its reverse (12120210021222), we get a palindrome (234240222042432).

The spelling of 222120012021210 in words is "two hundred twenty-two trillion, one hundred twenty billion, twelve million, twenty-one thousand, two hundred ten".