3621153121 has 16 divisors (see below), whose sum is σ = 3875904000. Its totient is φ = 3375590400.

The previous prime is 3621153103. The next prime is 3621153157. The reversal of 3621153121 is 1213511263.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 3621153121 - 2²¹ = 3619055969 is a prime.

It is a super-2 number, since 2×3621153121² = 26225499851456081282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3621153191) 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, 399166 + ... + 408136.

It is an arithmetic number, because the mean of its divisors is an integer number (242244000).

Almost surely, 2^3621153121 is an apocalyptic number.

3621153121 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3621153121 is a deficient number, since it is larger than the sum of its proper divisors (254750879).

3621153121 is a wasteful number, since it uses less digits than its factorization.

3621153121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9480.

The product of its digits is 1080, while the sum is 25.

The square root of 3621153121 is about 60176.0178227174. The cubic root of 3621153121 is about 1535.6148259790.

Adding to 3621153121 its reverse (1213511263), we get a palindrome (4834664384).

The spelling of 3621153121 in words is "three billion, six hundred twenty-one million, one hundred fifty-three thousand, one hundred twenty-one".