2996521221 has 8 divisors (see below), whose sum is σ = 4000127040. Its totient is φ = 1995298112.

The previous prime is 2996521211. The next prime is 2996521243. The reversal of 2996521221 is 1221256992.

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 2996521221 - 2⁷ = 2996521093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2996521221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2996521211) 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, 592740 + ... + 597773.

It is an arithmetic number, because the mean of its divisors is an integer number (500015880).

Almost surely, 2^2996521221 is an apocalyptic number.

It is an amenable number.

2996521221 is a deficient number, since it is larger than the sum of its proper divisors (1003605819).

2996521221 is a wasteful number, since it uses less digits than its factorization.

2996521221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1191355.

The product of its digits is 38880, while the sum is 39.

The square root of 2996521221 is about 54740.4897767640. The cubic root of 2996521221 is about 1441.6918805188.

The spelling of 2996521221 in words is "two billion, nine hundred ninety-six million, five hundred twenty-one thousand, two hundred twenty-one".