11422001521 has 16 divisors (see below), whose sum is σ = 13197385600. Its totient is φ = 9682675200.

The previous prime is 11422001489. The next prime is 11422001579. The reversal of 11422001521 is 12510022411.

It is a cyclic number.

It is not a de Polignac number, because 11422001521 - 2⁵ = 11422001489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11422001581) 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, 1148671 + ... + 1158571.

It is an arithmetic number, because the mean of its divisors is an integer number (824836600).

Almost surely, 2^11422001521 is an apocalyptic number.

It is an amenable number.

11422001521 is a deficient number, since it is larger than the sum of its proper divisors (1775384079).

11422001521 is an equidigital number, since it uses as much as digits as its factorization.

11422001521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11704.

The product of its (nonzero) digits is 160, while the sum is 19.

Adding to 11422001521 its reverse (12510022411), we get a palindrome (23932023932).

The spelling of 11422001521 in words is "eleven billion, four hundred twenty-two million, one thousand, five hundred twenty-one".