202112102020212 has 30 divisors (see below), whose sum is σ = 528360958059858. Its totient is φ = 67370700673296.

The previous prime is 202112102020109. The next prime is 202112102020219. The reversal of 202112102020212 is 212020201211202.

It is a happy number.

202112102020212 is a `hidden beast` number, since 20 + 21 + 1 + 210 + 202 + 0 + 212 = 666.

It can be written as a sum of positive squares in only one way, i.e., 199028158614756 + 3083943405456 = 14107734^2 + 1756116^2 .

It is a super-2 number, since 2×202112102020212² (a number of 29 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202112102020219) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 311901391683 + ... + 311901392330.

Almost surely, 2^{202112102020212} is an apocalyptic number.

It is an amenable number.

202112102020212 is an abundant number, since it is smaller than the sum of its proper divisors (326248856039646).

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

202112102020212 is a wasteful number, since it uses less digits than its factorization.

202112102020212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623802784029 (or 623802784018 counting only the distinct ones).

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

Adding to 202112102020212 its reverse (212020201211202), we get a palindrome (414132303231414).

The spelling of 202112102020212 in words is "two hundred two trillion, one hundred twelve billion, one hundred two million, twenty thousand, two hundred twelve".