401115043100221 has 16 divisors (see below), whose sum is σ = 409948865611200. Its totient is φ = 392366442504960.

The previous prime is 401115043100201. The next prime is 401115043100251. The reversal of 401115043100221 is 122001340511104.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401115043100221 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 (401115043100201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30023445 + ... + 41275141.

It is an arithmetic number, because the mean of its divisors is an integer number (25621804100700).

Almost surely, 2^{401115043100221} is an apocalyptic number.

It is an amenable number.

401115043100221 is a deficient number, since it is larger than the sum of its proper divisors (8833822510979).

401115043100221 is a wasteful number, since it uses less digits than its factorization.

401115043100221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11255484.

The product of its (nonzero) digits is 960, while the sum is 25.

Adding to 401115043100221 its reverse (122001340511104), we get a palindrome (523116383611325).

The spelling of 401115043100221 in words is "four hundred one trillion, one hundred fifteen billion, forty-three million, one hundred thousand, two hundred twenty-one".