350587992121 has 4 divisors (see below), whose sum is σ = 350645462244. Its totient is φ = 350530522000.

The previous prime is 350587992089. The next prime is 350587992127. The reversal of 350587992121 is 121299785053.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121299785053 = 37 ⋅3278372569.

It can be written as a sum of positive squares in 2 ways, for example, as 185618797225 + 164969194896 = 430835^2 + 406164^2 .

It is a cyclic number.

It is not a de Polignac number, because 350587992121 - 2⁵ = 350587992089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (350587992127) 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, 28725910 + ... + 28738111.

It is an arithmetic number, because the mean of its divisors is an integer number (87661365561).

Almost surely, 2^350587992121 is an apocalyptic number.

It is an amenable number.

350587992121 is a deficient number, since it is larger than the sum of its proper divisors (57470123).

350587992121 is an equidigital number, since it uses as much as digits as its factorization.

350587992121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57470122.

The product of its (nonzero) digits is 1360800, while the sum is 52.

The spelling of 350587992121 in words is "three hundred fifty billion, five hundred eighty-seven million, nine hundred ninety-two thousand, one hundred twenty-one".