20022400401 has 4 divisors (see below), whose sum is σ = 26696533872. Its totient is φ = 13348266932.

The previous prime is 20022400397. The next prime is 20022400561. The reversal of 20022400401 is 10400422002.

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 20022400401 - 2² = 20022400397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20022400901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3337066731 + ... + 3337066736.

It is an arithmetic number, because the mean of its divisors is an integer number (6674133468).

Almost surely, 2^20022400401 is an apocalyptic number.

It is an amenable number.

20022400401 is a deficient number, since it is larger than the sum of its proper divisors (6674133471).

20022400401 is an equidigital number, since it uses as much as digits as its factorization.

20022400401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6674133470.

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

Adding to 20022400401 its reverse (10400422002), we get a palindrome (30422822403).

The spelling of 20022400401 in words is "twenty billion, twenty-two million, four hundred thousand, four hundred one".