121081031 has 2 divisors, whose sum is σ = 121081032. Its totient is φ = 121081030.

The previous prime is 121081027. The next prime is 121081033. The reversal of 121081031 is 130180121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121081031 - 2² = 121081027 is a prime.

It is a super-2 number, since 2×121081031² = 29321232136045922, which contains 22 as substring.

Together with 121081033, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121081033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60540515 + 60540516.

It is an arithmetic number, because the mean of its divisors is an integer number (60540516).

Almost surely, 2^121081031 is an apocalyptic number.

121081031 is a deficient number, since it is larger than the sum of its proper divisors (1).

121081031 is an equidigital number, since it uses as much as digits as its factorization.

121081031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 17.

The square root of 121081031 is about 11003.6826108353. The cubic root of 121081031 is about 494.7191291676.

The spelling of 121081031 in words is "one hundred twenty-one million, eighty-one thousand, thirty-one".