2120402200 has 96 divisors (see below), whose sum is σ = 5879266560. Its totient is φ = 695376000.

The previous prime is 2120402153. The next prime is 2120402203. The reversal of 2120402200 is 22040212.

It is a super-2 number, since 2×2120402200² = 8992210979529680000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120402203) 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, 726 + ... + 65125.

It is an arithmetic number, because the mean of its divisors is an integer number (61242360).

Almost surely, 2^2120402200 is an apocalyptic number.

2120402200 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 2120402200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2939633280).

2120402200 is an abundant number, since it is smaller than the sum of its proper divisors (3758864360).

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

2120402200 is a wasteful number, since it uses less digits than its factorization.

2120402200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65897 (or 65888 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 2120402200 is about 46047.8251386534. The cubic root of 2120402200 is about 1284.7128913889.

Adding to 2120402200 its reverse (22040212), we get a palindrome (2142442412).

The spelling of 2120402200 in words is "two billion, one hundred twenty million, four hundred two thousand, two hundred".