401212251213 has 16 divisors (see below), whose sum is σ = 535270224000. Its totient is φ = 267314618880.

The previous prime is 401212251211. The next prime is 401212251221. The reversal of 401212251213 is 312152212104.

It is a happy number.

It is not a de Polignac number, because 401212251213 - 2¹ = 401212251211 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401212251211) 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, 63570328 + ... + 63576638.

It is an arithmetic number, because the mean of its divisors is an integer number (33454389000).

Almost surely, 2^401212251213 is an apocalyptic number.

It is an amenable number.

401212251213 is a deficient number, since it is larger than the sum of its proper divisors (134057972787).

401212251213 is a wasteful number, since it uses less digits than its factorization.

401212251213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15652.

The product of its (nonzero) digits is 960, while the sum is 24.

Adding to 401212251213 its reverse (312152212104), we get a palindrome (713364463317).

The spelling of 401212251213 in words is "four hundred one billion, two hundred twelve million, two hundred fifty-one thousand, two hundred thirteen".