400323421201 has 4 divisors (see below), whose sum is σ = 436716459504. Its totient is φ = 363930382900.

The previous prime is 400323421181. The next prime is 400323421261. The reversal of 400323421201 is 102124323004.

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 400323421201 - 2¹⁹ = 400322896913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400323421261) 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, 18196519135 + ... + 18196519156.

It is an arithmetic number, because the mean of its divisors is an integer number (109179114876).

Almost surely, 2^400323421201 is an apocalyptic number.

It is an amenable number.

400323421201 is a deficient number, since it is larger than the sum of its proper divisors (36393038303).

400323421201 is a wasteful number, since it uses less digits than its factorization.

400323421201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36393038302.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 400323421201 its reverse (102124323004), we get a palindrome (502447744205).

The spelling of 400323421201 in words is "four hundred billion, three hundred twenty-three million, four hundred twenty-one thousand, two hundred one".