401132122220 has 24 divisors (see below), whose sum is σ = 846088380144. Its totient is φ = 159746006336.

The previous prime is 401132122207. The next prime is 401132122229. The reversal of 401132122220 is 22221231104.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 401132122192 and 401132122201.

It is not an unprimeable number, because it can be changed into a prime (401132122229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44173007 + ... + 44182086.

It is an arithmetic number, because the mean of its divisors is an integer number (35253682506).

Almost surely, 2^401132122220 is an apocalyptic number.

It is an amenable number.

401132122220 is an abundant number, since it is smaller than the sum of its proper divisors (444956257924).

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

401132122220 is a wasteful number, since it uses less digits than its factorization.

401132122220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88355329 (or 88355327 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 401132122220 its reverse (22221231104), we get a palindrome (423353353324).

The spelling of 401132122220 in words is "four hundred one billion, one hundred thirty-two million, one hundred twenty-two thousand, two hundred twenty".