222021100212 has 96 divisors (see below), whose sum is σ = 546977034240. Its totient is φ = 70007068800.

The previous prime is 222021100181. The next prime is 222021100277. The reversal of 222021100212 is 212001120222.

It is a junction number, because it is equal to n+sod(n) for n = 222021100191 and 222021100200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3115839 + ... + 3186297.

It is an arithmetic number, because the mean of its divisors is an integer number (5697677440).

Almost surely, 2^222021100212 is an apocalyptic number.

It is an amenable number.

222021100212 is an abundant number, since it is smaller than the sum of its proper divisors (324955934028).

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

222021100212 is a wasteful number, since it uses less digits than its factorization.

222021100212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70701 (or 70699 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 222021100212 its reverse (212001120222), we get a palindrome (434022220434).

The spelling of 222021100212 in words is "two hundred twenty-two billion, twenty-one million, one hundred thousand, two hundred twelve".