121100131 has 2 divisors, whose sum is σ = 121100132. Its totient is φ = 121100130.

The previous prime is 121100117. The next prime is 121100159. The reversal of 121100131 is 131001121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121100131 - 2⁷ = 121100003 is a prime.

It is a super-2 number, since 2×121100131² = 29330483456434322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121100171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60550065 + 60550066.

It is an arithmetic number, because the mean of its divisors is an integer number (60550066).

Almost surely, 2^121100131 is an apocalyptic number.

121100131 is a deficient number, since it is larger than the sum of its proper divisors (1).

121100131 is an equidigital number, since it uses as much as digits as its factorization.

121100131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 121100131 is about 11004.5504678746. The cubic root of 121100131 is about 494.7451410553.

Adding to 121100131 its reverse (131001121), we get a palindrome (252101252).

The spelling of 121100131 in words is "one hundred twenty-one million, one hundred thousand, one hundred thirty-one".