2121259974 has 16 divisors (see below), whose sum is σ = 4284526320. Its totient is φ = 700085600.

The previous prime is 2121259891. The next prime is 2121259979. The reversal of 2121259974 is 4799521212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121259979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1749609 + ... + 1750820.

It is an arithmetic number, because the mean of its divisors is an integer number (267782895).

Almost surely, 2^2121259974 is an apocalyptic number.

2121259974 is an abundant number, since it is smaller than the sum of its proper divisors (2163266346).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2121259974 is a wasteful number, since it uses less digits than its factorization.

2121259974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3500535.

The product of its digits is 90720, while the sum is 42.

The square root of 2121259974 is about 46057.1381438317. The cubic root of 2121259974 is about 1284.8861045575.

The spelling of 2121259974 in words is "two billion, one hundred twenty-one million, two hundred fifty-nine thousand, nine hundred seventy-four".