202120123101102 has 28 divisors (see below), whose sum is σ = 454562334467280. Its totient is φ = 67373374366548.

The previous prime is 202120123101079. The next prime is 202120123101139. The reversal of 202120123101102 is 201101321021202.

202120123101102 is a `hidden beast` number, since 20 + 21 + 201 + 2 + 310 + 110 + 2 = 666.

It is a super-2 number, since 2×202120123101102² (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 an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 69314169702 + ... + 69314172617.

Almost surely, 2^{202120123101102} is an apocalyptic number.

202120123101102 is an abundant number, since it is smaller than the sum of its proper divisors (252442211366178).

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

202120123101102 is an equidigital number, since it uses as much as digits as its factorization.

202120123101102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138628342339 (or 138628342324 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 202120123101102 its reverse (201101321021202), we get a palindrome (403221444122304).

The spelling of 202120123101102 in words is "two hundred two trillion, one hundred twenty billion, one hundred twenty-three million, one hundred one thousand, one hundred two".