392220221212 has 24 divisors (see below), whose sum is σ = 697980638880. Its totient is φ = 192800343360.

The previous prime is 392220221207. The next prime is 392220221221. The reversal of 392220221212 is 212122022293.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103338 + ... + 891694.

It is an arithmetic number, because the mean of its divisors is an integer number (29082526620).

Almost surely, 2^392220221212 is an apocalyptic number.

It is an amenable number.

392220221212 is a deficient number, since it is larger than the sum of its proper divisors (305760417668).

392220221212 is a wasteful number, since it uses less digits than its factorization.

392220221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790461 (or 790459 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The spelling of 392220221212 in words is "three hundred ninety-two billion, two hundred twenty million, two hundred twenty-one thousand, two hundred twelve".