401939122212 has 48 divisors (see below), whose sum is σ = 1043186356800. Its totient is φ = 133835454720.

The previous prime is 401939122201. The next prime is 401939122271. The reversal of 401939122212 is 212221939104.

401939122212 is a `hidden beast` number, since 40 + 1 + 9 + 391 + 2 + 221 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1902714 + ... + 2103377.

It is an arithmetic number, because the mean of its divisors is an integer number (21733049100).

Almost surely, 2^401939122212 is an apocalyptic number.

It is an amenable number.

401939122212 is an abundant number, since it is smaller than the sum of its proper divisors (641247234588).

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

401939122212 is a wasteful number, since it uses less digits than its factorization.

401939122212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4007033 (or 4007025 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The spelling of 401939122212 in words is "four hundred one billion, nine hundred thirty-nine million, one hundred twenty-two thousand, two hundred twelve".