441400231400021 has 4 divisors (see below), whose sum is σ = 441400425913152. Its totient is φ = 441400036886892.

The previous prime is 441400231399979. The next prime is 441400231400027. The reversal of 441400231400021 is 120004132004144.

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 441400231400021 - 2³⁰ = 441399157658197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (441400231400027) 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, 93812015 + ... + 98404748.

It is an arithmetic number, because the mean of its divisors is an integer number (110350106478288).

Almost surely, 2^{441400231400021} is an apocalyptic number.

It is an amenable number.

441400231400021 is a deficient number, since it is larger than the sum of its proper divisors (194513131).

441400231400021 is a wasteful number, since it uses less digits than its factorization.

441400231400021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194513130.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 441400231400021 its reverse (120004132004144), we get a palindrome (561404363404165).

The spelling of 441400231400021 in words is "four hundred forty-one trillion, four hundred billion, two hundred thirty-one million, four hundred thousand, twenty-one".