401212224666 has 72 divisors (see below), whose sum is σ = 1007384848704. Its totient is φ = 114427712640.

The previous prime is 401212224661. The next prime is 401212224709. The reversal of 401212224666 is 666422212104.

It is a self number, because there is not a number n which added to its sum of digits gives 401212224666.

It is not an unprimeable number, because it can be changed into a prime (401212224661) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3448530 + ... + 3562973.

It is an arithmetic number, because the mean of its divisors is an integer number (13991456232).

Almost surely, 2^401212224666 is an apocalyptic number.

401212224666 is an abundant number, since it is smaller than the sum of its proper divisors (606172624038).

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

401212224666 is a wasteful number, since it uses less digits than its factorization.

401212224666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7011556 (or 7011536 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The spelling of 401212224666 in words is "four hundred one billion, two hundred twelve million, two hundred twenty-four thousand, six hundred sixty-six".