22002321212 has 6 divisors (see below), whose sum is σ = 38504062128. Its totient is φ = 11001160604.

The previous prime is 22002321149. The next prime is 22002321217. The reversal of 22002321212 is 21212320022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22002321217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2750290148 + ... + 2750290155.

It is an arithmetic number, because the mean of its divisors is an integer number (6417343688).

Almost surely, 2^22002321212 is an apocalyptic number.

It is an amenable number.

22002321212 is a deficient number, since it is larger than the sum of its proper divisors (16501740916).

22002321212 is a wasteful number, since it uses less digits than its factorization.

22002321212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5500580307 (or 5500580305 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 22002321212 its reverse (21212320022), we get a palindrome (43214641234).

The spelling of 22002321212 in words is "twenty-two billion, two million, three hundred twenty-one thousand, two hundred twelve".