2522160021 has 8 divisors (see below), whose sum is σ = 3363483904. Its totient is φ = 1681138080.

The previous prime is 2522159989. The next prime is 2522160037. The reversal of 2522160021 is 1200612252.

It is a happy number.

2522160021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2522160021 - 2⁵ = 2522159989 is a prime.

It is a super-2 number, since 2×2522160021² = 12722582343061440882, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2522160021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2522160041) 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, 55216 + ... + 89961.

It is an arithmetic number, because the mean of its divisors is an integer number (420435488).

Almost surely, 2^2522160021 is an apocalyptic number.

It is an amenable number.

2522160021 is a deficient number, since it is larger than the sum of its proper divisors (841323883).

2522160021 is a wasteful number, since it uses less digits than its factorization.

2522160021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150971.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 2522160021 is about 50221.1113078952. Note that the first 3 decimals coincide. The cubic root of 2522160021 is about 1361.2071211980.

Adding to 2522160021 its reverse (1200612252), we get a palindrome (3722772273).

The spelling of 2522160021 in words is "two billion, five hundred twenty-two million, one hundred sixty thousand, twenty-one".