222122220012 has 144 divisors (see below), whose sum is σ = 709881629184. Its totient is φ = 56881440000.

The previous prime is 222122219981. The next prime is 222122220049. The reversal of 222122220012 is 210022221222.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 367489 + ... + 761112.

It is an arithmetic number, because the mean of its divisors is an integer number (4929733536).

Almost surely, 2^222122220012 is an apocalyptic number.

222122220012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

222122220012 is an abundant number, since it is smaller than the sum of its proper divisors (487759409172).

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

222122220012 is a wasteful number, since it uses less digits than its factorization.

222122220012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128700 (or 1128695 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 222122220012 its reverse (210022221222), we get a palindrome (432144441234).

The spelling of 222122220012 in words is "two hundred twenty-two billion, one hundred twenty-two million, two hundred twenty thousand, twelve".