121390801 has 16 divisors (see below), whose sum is σ = 143824896. Its totient is φ = 100297296.

The previous prime is 121390799. The next prime is 121390811. The reversal of 121390801 is 108093121.

It is a cyclic number.

It is not a de Polignac number, because 121390801 - 2¹ = 121390799 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121390811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19290 + ... + 24796.

It is an arithmetic number, because the mean of its divisors is an integer number (8989056).

Almost surely, 2^121390801 is an apocalyptic number.

It is an amenable number.

121390801 is a deficient number, since it is larger than the sum of its proper divisors (22434095).

121390801 is an equidigital number, since it uses as much as digits as its factorization.

121390801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5628.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 121390801 is about 11017.7493618252. The cubic root of 121390801 is about 495.1406613143.

The spelling of 121390801 in words is "one hundred twenty-one million, three hundred ninety thousand, eight hundred one".