121262113 has 6 divisors (see below), whose sum is σ = 141060066. Its totient is φ = 103938912.

The previous prime is 121262069. The next prime is 121262129. The reversal of 121262113 is 311262121.

It can be written as a sum of positive squares in only one way, i.e., 107184609 + 14077504 = 10353^2 + 3752^2 .

It is not a de Polignac number, because 121262113 - 2²⁵ = 87707681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121262143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1237320 + ... + 1237417.

It is an arithmetic number, because the mean of its divisors is an integer number (23510011).

Almost surely, 2^121262113 is an apocalyptic number.

It is an amenable number.

121262113 is a deficient number, since it is larger than the sum of its proper divisors (19797953).

121262113 is an equidigital number, since it uses as much as digits as its factorization.

121262113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2474751 (or 2474744 counting only the distinct ones).

The product of its digits is 144, while the sum is 19.

The square root of 121262113 is about 11011.9077820330. The cubic root of 121262113 is about 494.9656310525.

The spelling of 121262113 in words is "one hundred twenty-one million, two hundred sixty-two thousand, one hundred thirteen".