121250631 has 4 divisors (see below), whose sum is σ = 161667512. Its totient is φ = 80833752.

The previous prime is 121250621. The next prime is 121250671. The reversal of 121250631 is 136052121.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 121250631 - 2⁹ = 121250119 is a prime.

It is a super-2 number, since 2×121250631² = 29403431035796322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121250598 and 121250607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121250621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20208436 + ... + 20208441.

It is an arithmetic number, because the mean of its divisors is an integer number (40416878).

Almost surely, 2^121250631 is an apocalyptic number.

121250631 is a deficient number, since it is larger than the sum of its proper divisors (40416881).

121250631 is an equidigital number, since it uses as much as digits as its factorization.

121250631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40416880.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 121250631 is about 11011.3864249694. The cubic root of 121250631 is about 494.9500082153.

The spelling of 121250631 in words is "one hundred twenty-one million, two hundred fifty thousand, six hundred thirty-one".