202120212111102 has 48 divisors (see below), whose sum is σ = 445131749484240. Its totient is φ = 66265126963200.

The previous prime is 202120212111089. The next prime is 202120212111107. The reversal of 202120212111102 is 201111212021202.

202120212111102 is a `hidden beast` number, since 202 + 120 + 21 + 211 + 110 + 2 = 666.

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 (202120212111107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13942974 + ... + 24467262.

It is an arithmetic number, because the mean of its divisors is an integer number (9273578114255).

Almost surely, 2^{202120212111102} is an apocalyptic number.

202120212111102 is an abundant number, since it is smaller than the sum of its proper divisors (243011537373138).

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

202120212111102 is a wasteful number, since it uses less digits than its factorization.

202120212111102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10541849 (or 10541846 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 202120212111102 its reverse (201111212021202), we get a palindrome (403231424132304).

The spelling of 202120212111102 in words is "two hundred two trillion, one hundred twenty billion, two hundred twelve million, one hundred eleven thousand, one hundred two".