22031002212 has 12 divisors (see below), whose sum is σ = 51405671856. Its totient is φ = 7343667400.

The previous prime is 22031002193. The next prime is 22031002247. The reversal of 22031002212 is 21220013022.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 22031002191 and 22031002200.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 917958414 + ... + 917958437.

It is an arithmetic number, because the mean of its divisors is an integer number (4283805988).

Almost surely, 2^22031002212 is an apocalyptic number.

It is an amenable number.

22031002212 is an abundant number, since it is smaller than the sum of its proper divisors (29374669644).

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

22031002212 is a wasteful number, since it uses less digits than its factorization.

22031002212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1835916858 (or 1835916856 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 22031002212 its reverse (21220013022), we get a palindrome (43251015234).

The spelling of 22031002212 in words is "twenty-two billion, thirty-one million, two thousand, two hundred twelve".