121282631 has 2 divisors, whose sum is σ = 121282632. Its totient is φ = 121282630.

The previous prime is 121282621. The next prime is 121282649. The reversal of 121282631 is 136282121.

It is a weak prime.

It is an emirp because it is prime and its reverse (136282121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121282631 is a prime.

It is a super-2 number, since 2×121282631² = 29418953164564322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121282631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121282621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60641315 + 60641316.

It is an arithmetic number, because the mean of its divisors is an integer number (60641316).

Almost surely, 2^121282631 is an apocalyptic number.

121282631 is a deficient number, since it is larger than the sum of its proper divisors (1).

121282631 is an equidigital number, since it uses as much as digits as its factorization.

121282631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 26.

The square root of 121282631 is about 11012.8393704803. The cubic root of 121282631 is about 494.9935461526.

The spelling of 121282631 in words is "one hundred twenty-one million, two hundred eighty-two thousand, six hundred thirty-one".