121101002131 has 4 divisors (see below), whose sum is σ = 121551192000. Its totient is φ = 120650812264.

The previous prime is 121101002129. The next prime is 121101002167. The reversal of 121101002131 is 131200101121.

It is a happy number.

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 121101002131 - 2¹ = 121101002129 is a prime.

It is a super-2 number, since 2×121101002131² (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 (121101002111) 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, 225094531 + ... + 225095068.

It is an arithmetic number, because the mean of its divisors is an integer number (30387798000).

Almost surely, 2^121101002131 is an apocalyptic number.

121101002131 is a deficient number, since it is larger than the sum of its proper divisors (450189869).

121101002131 is an equidigital number, since it uses as much as digits as its factorization.

121101002131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450189868.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 121101002131 its reverse (131200101121), we get a palindrome (252301103252).

The spelling of 121101002131 in words is "one hundred twenty-one billion, one hundred one million, two thousand, one hundred thirty-one".