213992274121 has 8 divisors (see below), whose sum is σ = 215410958784. Its totient is φ = 212575224240.

The previous prime is 213992274103. The next prime is 213992274163. The reversal of 213992274121 is 121472299312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213992274121 - 2⁷ = 213992273993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213992274191) 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, 145470 + ... + 670183.

It is an arithmetic number, because the mean of its divisors is an integer number (26926369848).

Almost surely, 2^213992274121 is an apocalyptic number.

It is an amenable number.

213992274121 is a deficient number, since it is larger than the sum of its proper divisors (1418684663).

213992274121 is a wasteful number, since it uses less digits than its factorization.

213992274121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817391.

The product of its digits is 108864, while the sum is 43.

The spelling of 213992274121 in words is "two hundred thirteen billion, nine hundred ninety-two million, two hundred seventy-four thousand, one hundred twenty-one".