401221054024 has 48 divisors (see below), whose sum is σ = 926589454380. Its totient is φ = 161837061120.

The previous prime is 401221054021. The next prime is 401221054033. The reversal of 401221054024 is 420450122104.

It can be written as a sum of positive squares in 2 ways, for example, as 334234296900 + 66986757124 = 578130^2 + 258818^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 401221054024.

It is not an unprimeable number, because it can be changed into a prime (401221054021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30096957 + ... + 30110284.

Almost surely, 2^401221054024 is an apocalyptic number.

It is an amenable number.

401221054024 is an abundant number, since it is smaller than the sum of its proper divisors (525368400356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

401221054024 is a wasteful number, since it uses less digits than its factorization.

401221054024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60207278 (or 60207267 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

Adding to 401221054024 its reverse (420450122104), we get a palindrome (821671176128).

The spelling of 401221054024 in words is "four hundred one billion, two hundred twenty-one million, fifty-four thousand, twenty-four".