121390501 has 4 divisors (see below), whose sum is σ = 122135392. Its totient is φ = 120645612.

The previous prime is 121390457. The next prime is 121390559. The reversal of 121390501 is 105093121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121390501 - 2¹³ = 121382309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121390301) 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, 372201 + ... + 372526.

It is an arithmetic number, because the mean of its divisors is an integer number (30533848).

Almost surely, 2^121390501 is an apocalyptic number.

It is an amenable number.

121390501 is a deficient number, since it is larger than the sum of its proper divisors (744891).

121390501 is an equidigital number, since it uses as much as digits as its factorization.

121390501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744890.

The product of its (nonzero) digits is 270, while the sum is 22.

The square root of 121390501 is about 11017.7357474211. The cubic root of 121390501 is about 495.1402534242.

The spelling of 121390501 in words is "one hundred twenty-one million, three hundred ninety thousand, five hundred one".