2122550521 has 16 divisors (see below), whose sum is σ = 2766040704. Its totient is φ = 1580592384.

The previous prime is 2122550497. The next prime is 2122550533. The reversal of 2122550521 is 1250552212.

It is not a de Polignac number, because 2122550521 - 2⁷ = 2122550393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2122500521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 684475 + ... + 687568.

It is an arithmetic number, because the mean of its divisors is an integer number (172877544).

Almost surely, 2^2122550521 is an apocalyptic number.

It is an amenable number.

2122550521 is a deficient number, since it is larger than the sum of its proper divisors (643490183).

2122550521 is a wasteful number, since it uses less digits than its factorization.

2122550521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372080.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 2122550521 is about 46071.1462957023. The cubic root of 2122550521 is about 1285.1466210688.

The spelling of 2122550521 in words is "two billion, one hundred twenty-two million, five hundred fifty thousand, five hundred twenty-one".