2153122356 has 96 divisors (see below), whose sum is σ = 6288694272. Its totient is φ = 557015040.

The previous prime is 2153122333. The next prime is 2153122381. The reversal of 2153122356 is 6532213512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 232935 + ... + 242001.

It is an arithmetic number, because the mean of its divisors is an integer number (65507232).

Almost surely, 2^2153122356 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2153122356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3144347136).

2153122356 is an abundant number, since it is smaller than the sum of its proper divisors (4135571916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2153122356 is a wasteful number, since it uses less digits than its factorization.

2153122356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9349 (or 9347 counting only the distinct ones).

The product of its digits is 10800, while the sum is 30.

The square root of 2153122356 is about 46401.7494928801. The cubic root of 2153122356 is about 1291.2873705560.

Adding to 2153122356 its reverse (6532213512), we get a palindrome (8685335868).

The spelling of 2153122356 in words is "two billion, one hundred fifty-three million, one hundred twenty-two thousand, three hundred fifty-six".