100102122121 has 4 divisors (see below), whose sum is σ = 100113181200. Its totient is φ = 100091063044.

The previous prime is 100102122047. The next prime is 100102122139. The reversal of 100102122121 is 121221201001.

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 100102122121 - 2¹⁷ = 100101991049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100102122181) 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, 5515951 + ... + 5534068.

It is an arithmetic number, because the mean of its divisors is an integer number (25028295300).

Almost surely, 2^100102122121 is an apocalyptic number.

It is an amenable number.

100102122121 is a deficient number, since it is larger than the sum of its proper divisors (11059079).

100102122121 is an equidigital number, since it uses as much as digits as its factorization.

100102122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11059078.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 100102122121 its reverse (121221201001), we get a palindrome (221323323122).

The spelling of 100102122121 in words is "one hundred billion, one hundred two million, one hundred twenty-two thousand, one hundred twenty-one".