102202002121 has 4 divisors (see below), whose sum is σ = 104578792912. Its totient is φ = 99825211332.

The previous prime is 102202002113. The next prime is 102202002131. The reversal of 102202002121 is 121200202201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 102202002121 - 2³ = 102202002113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102202002131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1188395331 + ... + 1188395416.

It is an arithmetic number, because the mean of its divisors is an integer number (26144698228).

Almost surely, 2^102202002121 is an apocalyptic number.

It is an amenable number.

102202002121 is a deficient number, since it is larger than the sum of its proper divisors (2376790791).

102202002121 is an equidigital number, since it uses as much as digits as its factorization.

102202002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2376790790.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 102202002121 its reverse (121200202201), we get a palindrome (223402204322).

The spelling of 102202002121 in words is "one hundred two billion, two hundred two million, two thousand, one hundred twenty-one".