102011131121 has 4 divisors (see below), whose sum is σ = 102111241200. Its totient is φ = 101911021044.

The previous prime is 102011131069. The next prime is 102011131169. The reversal of 102011131121 is 121131110201.

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 102011131121 - 2³⁰ = 100937389297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102011131096 and 102011131105.

It is not an unprimeable number, because it can be changed into a prime (102011131021) 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, 50053511 + ... + 50055548.

It is an arithmetic number, because the mean of its divisors is an integer number (25527810300).

Almost surely, 2^102011131121 is an apocalyptic number.

It is an amenable number.

102011131121 is a deficient number, since it is larger than the sum of its proper divisors (100110079).

102011131121 is a wasteful number, since it uses less digits than its factorization.

102011131121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100110078.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 102011131121 its reverse (121131110201), we get a palindrome (223142241322).

The spelling of 102011131121 in words is "one hundred two billion, eleven million, one hundred thirty-one thousand, one hundred twenty-one".