2153021200 has 120 divisors (see below), whose sum is σ = 5659075296. Its totient is φ = 780672000.

The previous prime is 2153021183. The next prime is 2153021201. The reversal of 2153021200 is 21203512.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (2153021201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2828820 + ... + 2829580.

Almost surely, 2^2153021200 is an apocalyptic number.

2153021200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2153021200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2829537648).

2153021200 is an abundant number, since it is smaller than the sum of its proper divisors (3506054096).

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

2153021200 is a wasteful number, since it uses less digits than its factorization.

2153021200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1433 (or 1422 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 2153021200 is about 46400.6594780721. The cubic root of 2153021200 is about 1291.2671482169.

Adding to 2153021200 its reverse (21203512), we get a palindrome (2174224712).

The spelling of 2153021200 in words is "two billion, one hundred fifty-three million, twenty-one thousand, two hundred".