102021100121 has 8 divisors (see below), whose sum is σ = 102411517824. Its totient is φ = 101630893680.

The previous prime is 102021100117. The next prime is 102021100127. The reversal of 102021100121 is 121001120201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102021100121 - 2² = 102021100117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102021100127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 951200 + ... + 1053006.

It is an arithmetic number, because the mean of its divisors is an integer number (12801439728).

Almost surely, 2^102021100121 is an apocalyptic number.

It is an amenable number.

102021100121 is a deficient number, since it is larger than the sum of its proper divisors (390417703).

102021100121 is a wasteful number, since it uses less digits than its factorization.

102021100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105631.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 102021100121 its reverse (121001120201), we get a palindrome (223022220322).

The spelling of 102021100121 in words is "one hundred two billion, twenty-one million, one hundred thousand, one hundred twenty-one".