202121021102 has 192 divisors, whose sum is σ = 423999744000. Its totient is φ = 71740468800.

The previous prime is 202121021087. The next prime is 202121021117. The reversal of 202121021102 is 201120121202.

It is an interprime number because it is at equal distance from previous prime (202121021087) and next prime (202121021117).

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 85245977 + ... + 85248347.

It is an arithmetic number, because the mean of its divisors is an integer number (2208332000).

Almost surely, 2^202121021102 is an apocalyptic number.

202121021102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

202121021102 is an abundant number, since it is smaller than the sum of its proper divisors (221878722898).

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

202121021102 is a wasteful number, since it uses less digits than its factorization.

202121021102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2508 (or 2483 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 202121021102 its reverse (201120121202), we get a palindrome (403241142304).

The spelling of 202121021102 in words is "two hundred two billion, one hundred twenty-one million, twenty-one thousand, one hundred two".