2492117221 has 8 divisors (see below), whose sum is σ = 2720037600. Its totient is φ = 2264424240.

The previous prime is 2492117209. The next prime is 2492117377. The reversal of 2492117221 is 1227112942.

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 2492117221 - 2⁹ = 2492116709 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 (2492117521) 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, 33511 + ... + 78148.

It is an arithmetic number, because the mean of its divisors is an integer number (340004700).

Almost surely, 2^2492117221 is an apocalyptic number.

It is an amenable number.

2492117221 is a deficient number, since it is larger than the sum of its proper divisors (227920379).

2492117221 is a wasteful number, since it uses less digits than its factorization.

2492117221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113699.

The product of its digits is 4032, while the sum is 31.

The square root of 2492117221 is about 49921.1099736374. The cubic root of 2492117221 is about 1355.7808294396.

The spelling of 2492117221 in words is "two billion, four hundred ninety-two million, one hundred seventeen thousand, two hundred twenty-one".