121202131 has 2 divisors, whose sum is σ = 121202132. Its totient is φ = 121202130.

The previous prime is 121202101. The next prime is 121202171. The reversal of 121202131 is 131202121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121202131 - 2⁵ = 121202099 is a prime.

It is a super-2 number, since 2×121202131² = 29379913117882322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121202101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60601065 + 60601066.

It is an arithmetic number, because the mean of its divisors is an integer number (60601066).

Almost surely, 2^121202131 is an apocalyptic number.

121202131 is a deficient number, since it is larger than the sum of its proper divisors (1).

121202131 is an equidigital number, since it uses as much as digits as its factorization.

121202131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 121202131 is about 11009.1839388758. The cubic root of 121202131 is about 494.8840064233.

Adding to 121202131 its reverse (131202121), we get a palindrome (252404252).

The spelling of 121202131 in words is "one hundred twenty-one million, two hundred two thousand, one hundred thirty-one".