121102431131 has 4 divisors (see below), whose sum is σ = 132111743064. Its totient is φ = 110093119200.

The previous prime is 121102431083. The next prime is 121102431167. The reversal of 121102431131 is 131134201121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121102431131 - 2¹⁴ = 121102414747 is a prime.

It is a super-2 number, since 2×121102431131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121102431731) 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, 5504655950 + ... + 5504655971.

It is an arithmetic number, because the mean of its divisors is an integer number (33027935766).

Almost surely, 2^121102431131 is an apocalyptic number.

121102431131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121102431131 is a deficient number, since it is larger than the sum of its proper divisors (11009311933).

121102431131 is a wasteful number, since it uses less digits than its factorization.

121102431131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11009311932.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 121102431131 its reverse (131134201121), we get a palindrome (252236632252).

The spelling of 121102431131 in words is "one hundred twenty-one billion, one hundred two million, four hundred thirty-one thousand, one hundred thirty-one".