2200400421 has 4 divisors (see below), whose sum is σ = 2933867232. Its totient is φ = 1466933612.

The previous prime is 2200400413. The next prime is 2200400453. The reversal of 2200400421 is 1240040022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2200400421 - 2³ = 2200400413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2200400421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2200400401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 366733401 + ... + 366733406.

It is an arithmetic number, because the mean of its divisors is an integer number (733466808).

Almost surely, 2^2200400421 is an apocalyptic number.

It is an amenable number.

2200400421 is a deficient number, since it is larger than the sum of its proper divisors (733466811).

2200400421 is an equidigital number, since it uses as much as digits as its factorization.

2200400421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733466810.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 2200400421 is about 46908.4259062271. The cubic root of 2200400421 is about 1300.6703487506.

Adding to 2200400421 its reverse (1240040022), we get a palindrome (3440440443).

The spelling of 2200400421 in words is "two billion, two hundred million, four hundred thousand, four hundred twenty-one".