401212312120 has 64 divisors (see below), whose sum is σ = 966345552000. Its totient is φ = 149461411968.

The previous prime is 401212312099. The next prime is 401212312121. The reversal of 401212312120 is 21213212104.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401212312121) 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, 4428982 + ... + 4518661.

It is an arithmetic number, because the mean of its divisors is an integer number (15099149250).

Almost surely, 2^401212312120 is an apocalyptic number.

401212312120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

401212312120 is an abundant number, since it is smaller than the sum of its proper divisors (565133239880).

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

401212312120 is a wasteful number, since it uses less digits than its factorization.

401212312120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8947732 (or 8947728 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 401212312120 its reverse (21213212104), we get a palindrome (422425524224).

The spelling of 401212312120 in words is "four hundred one billion, two hundred twelve million, three hundred twelve thousand, one hundred twenty".