102101120120121 has 16 divisors (see below), whose sum is σ = 136149301080000. Its totient is φ = 68060176731648.

The previous prime is 102101120120089. The next prime is 102101120120143. The reversal of 102101120120121 is 121021021101201.

It is a happy number.

It is not a de Polignac number, because 102101120120121 - 2⁵ = 102101120120089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102101120120121.

It is not an unprimeable number, because it can be changed into a prime (102101120120621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1671046230 + ... + 1671107328.

It is an arithmetic number, because the mean of its divisors is an integer number (8509331317500).

Almost surely, 2^{102101120120121} is an apocalyptic number.

It is an amenable number.

102101120120121 is a deficient number, since it is larger than the sum of its proper divisors (34048180959879).

102101120120121 is a wasteful number, since it uses less digits than its factorization.

102101120120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111208.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 102101120120121 its reverse (121021021101201), we get a palindrome (223122141221322).

The spelling of 102101120120121 in words is "one hundred two trillion, one hundred one billion, one hundred twenty million, one hundred twenty thousand, one hundred twenty-one".