2202421521 has 16 divisors (see below), whose sum is σ = 2990643264. Its totient is φ = 1441391424.

The previous prime is 2202421493. The next prime is 2202421547. The reversal of 2202421521 is 1251242022.

It is not a de Polignac number, because 2202421521 - 2¹¹ = 2202419473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2202421021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40195 + ... + 77591.

It is an arithmetic number, because the mean of its divisors is an integer number (186915204).

Almost surely, 2^2202421521 is an apocalyptic number.

It is an amenable number.

2202421521 is a deficient number, since it is larger than the sum of its proper divisors (788221743).

2202421521 is a wasteful number, since it uses less digits than its factorization.

2202421521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37760.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 2202421521 is about 46929.9639995600. The cubic root of 2202421521 is about 1301.0684551389.

Adding to 2202421521 its reverse (1251242022), we get a palindrome (3453663543).

The spelling of 2202421521 in words is "two billion, two hundred two million, four hundred twenty-one thousand, five hundred twenty-one".