102121011121 has 8 divisors (see below), whose sum is σ = 107503760000. Its totient is φ = 96739058160.

The previous prime is 102121011107. The next prime is 102121011127. The reversal of 102121011121 is 121110121201.

It is a happy number.

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 102121011121 - 2⁵ = 102121011089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102121011127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74011 + ... + 457951.

It is an arithmetic number, because the mean of its divisors is an integer number (13437970000).

Almost surely, 2^102121011121 is an apocalyptic number.

It is an amenable number.

102121011121 is a deficient number, since it is larger than the sum of its proper divisors (5382748879).

102121011121 is a wasteful number, since it uses less digits than its factorization.

102121011121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397959.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 102121011121 its reverse (121110121201), we get a palindrome (223231132322).

The spelling of 102121011121 in words is "one hundred two billion, one hundred twenty-one million, eleven thousand, one hundred twenty-one".