121352131 has 2 divisors, whose sum is σ = 121352132. Its totient is φ = 121352130.

The previous prime is 121352129. The next prime is 121352201. The reversal of 121352131 is 131253121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121352131 - 2¹ = 121352129 is a prime.

It is a super-2 number, since 2×121352131² = 29452679396482322, which contains 22 as substring.

Together with 121352129, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 121352099 and 121352108.

It is not a weakly prime, because it can be changed into another prime (121352111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60676065 + 60676066.

It is an arithmetic number, because the mean of its divisors is an integer number (60676066).

Almost surely, 2^121352131 is an apocalyptic number.

121352131 is a deficient number, since it is larger than the sum of its proper divisors (1).

121352131 is an equidigital number, since it uses as much as digits as its factorization.

121352131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 180, while the sum is 19.

The square root of 121352131 is about 11015.9943264328. The cubic root of 121352131 is about 495.0880787388.

The spelling of 121352131 in words is "one hundred twenty-one million, three hundred fifty-two thousand, one hundred thirty-one".