20210222112210 has 72 divisors (see below), whose sum is σ = 56899548451044. Its totient is φ = 4974823900800.

The previous prime is 20210222112209. The next prime is 20210222112247. The reversal of 20210222112210 is 1221122201202.

It is a happy number.

20210222112210 is a `hidden beast` number, since 2 + 0 + 210 + 22 + 211 + 221 + 0 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 855334574649 + 19354887537561 = 924843^2 + 4399419^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 664357641 + ... + 664388060.

Almost surely, 2^{20210222112210} is an apocalyptic number.

20210222112210 is an abundant number, since it is smaller than the sum of its proper divisors (36689326338834).

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

20210222112210 is a wasteful number, since it uses less digits than its factorization.

20210222112210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328745740 (or 1328745724 counting only the distinct ones).

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

Adding to 20210222112210 its reverse (1221122201202), we get a palindrome (21431344313412).

The spelling of 20210222112210 in words is "twenty trillion, two hundred ten billion, two hundred twenty-two million, one hundred twelve thousand, two hundred ten".