2211204400 has 30 divisors (see below), whose sum is σ = 5312419532. Its totient is φ = 884481600.

The previous prime is 2211204379. The next prime is 2211204421. The reversal of 2211204400 is 44021122.

It is an interprime number because it is at equal distance from previous prime (2211204379) and next prime (2211204421).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2763606 + ... + 2764405.

Almost surely, 2^2211204400 is an apocalyptic number.

2211204400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2211204400 is an abundant number, since it is smaller than the sum of its proper divisors (3101215132).

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

2211204400 is a wasteful number, since it uses less digits than its factorization.

2211204400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5528029 (or 5528018 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 2211204400 is about 47023.4452161898. The cubic root of 2211204400 is about 1302.7956404907.

Adding to 2211204400 its reverse (44021122), we get a palindrome (2255225522).

The spelling of 2211204400 in words is "two billion, two hundred eleven million, two hundred four thousand, four hundred".