23212021222 has 32 divisors (see below), whose sum is σ = 39358307520. Its totient is φ = 10247402880.

The previous prime is 23212021201. The next prime is 23212021253. The reversal of 23212021222 is 22212021232.

It is a self number, because there is not a number n which added to its sum of digits gives 23212021222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13779 + ... + 215902.

It is an arithmetic number, because the mean of its divisors is an integer number (1229947110).

Almost surely, 2^23212021222 is an apocalyptic number.

23212021222 is a deficient number, since it is larger than the sum of its proper divisors (16146286298).

23212021222 is a wasteful number, since it uses less digits than its factorization.

23212021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229745 (or 229719 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 23212021222 its reverse (22212021232), we get a palindrome (45424042454).

The spelling of 23212021222 in words is "twenty-three billion, two hundred twelve million, twenty-one thousand, two hundred twenty-two".