222011023212 has 36 divisors (see below), whose sum is σ = 612212216616. Its totient is φ = 67276067520.

The previous prime is 222011023159. The next prime is 222011023249. The reversal of 222011023212 is 212320110222.

It is a tau number, because it is divible by the number of its divisors (36).

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 11 ways as a sum of consecutive naturals, for example, 280316553 + ... + 280317344.

It is an arithmetic number, because the mean of its divisors is an integer number (17005894906).

Almost surely, 2^222011023212 is an apocalyptic number.

222011023212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

222011023212 is an abundant number, since it is smaller than the sum of its proper divisors (390201193404).

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

222011023212 is a wasteful number, since it uses less digits than its factorization.

222011023212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560633918 (or 560633913 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 222011023212 its reverse (212320110222), we get a palindrome (434331133434).

The spelling of 222011023212 in words is "two hundred twenty-two billion, eleven million, twenty-three thousand, two hundred twelve".