401220213140 has 48 divisors (see below), whose sum is σ = 847492208640. Its totient is φ = 159551696640.

The previous prime is 401220213073. The next prime is 401220213143. The reversal of 401220213140 is 41312022104.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401220213143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2385869 + ... + 2548491.

It is an arithmetic number, because the mean of its divisors is an integer number (17656087680).

Almost surely, 2^401220213140 is an apocalyptic number.

It is an amenable number.

401220213140 is an abundant number, since it is smaller than the sum of its proper divisors (446271995500).

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

401220213140 is a wasteful number, since it uses less digits than its factorization.

401220213140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163352 (or 163350 counting only the distinct ones).

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

Adding to 401220213140 its reverse (41312022104), we get a palindrome (442532235244).

The spelling of 401220213140 in words is "four hundred one billion, two hundred twenty million, two hundred thirteen thousand, one hundred forty".