220400432401 has 4 divisors (see below), whose sum is σ = 220853000512. Its totient is φ = 219947864292.

The previous prime is 220400432281. The next prime is 220400432429. The reversal of 220400432401 is 104234004022.

It is a happy number.

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 220400432401 - 2¹¹ = 220400430353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220400432471) 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, 226283325 + ... + 226284298.

It is an arithmetic number, because the mean of its divisors is an integer number (55213250128).

Almost surely, 2^220400432401 is an apocalyptic number.

It is an amenable number.

220400432401 is a deficient number, since it is larger than the sum of its proper divisors (452568111).

220400432401 is an equidigital number, since it uses as much as digits as its factorization.

220400432401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452568110.

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 220400432401 its reverse (104234004022), we get a palindrome (324634436423).

The spelling of 220400432401 in words is "two hundred twenty billion, four hundred million, four hundred thirty-two thousand, four hundred one".