20401012241 has 4 divisors (see below), whose sum is σ = 20401454832. Its totient is φ = 20400569652.

The previous prime is 20401012211. The next prime is 20401012267. The reversal of 20401012241 is 14221010402.

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 20401012241 - 2²² = 20396817937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20401012211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142895 + ... + 247428.

It is an arithmetic number, because the mean of its divisors is an integer number (5100363708).

Almost surely, 2^20401012241 is an apocalyptic number.

It is an amenable number.

20401012241 is a deficient number, since it is larger than the sum of its proper divisors (442591).

20401012241 is an equidigital number, since it uses as much as digits as its factorization.

20401012241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442590.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20401012241 its reverse (14221010402), we get a palindrome (34622022643).

The spelling of 20401012241 in words is "twenty billion, four hundred one million, twelve thousand, two hundred forty-one".