22101002212 has 12 divisors (see below), whose sum is σ = 38711387260. Its totient is φ = 11040605856.

The previous prime is 22101002207. The next prime is 22101002213. The reversal of 22101002212 is 21220010122.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1997732416 + 20103269796 = 44696^2 + 141786^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22101002192 and 22101002201.

It is not an unprimeable number, because it can be changed into a prime (22101002213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2468787 + ... + 2477722.

Almost surely, 2^22101002212 is an apocalyptic number.

It is an amenable number.

22101002212 is a deficient number, since it is larger than the sum of its proper divisors (16610385048).

22101002212 is a wasteful number, since it uses less digits than its factorization.

22101002212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4947630 (or 4947628 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22101002212 its reverse (21220010122), we get a palindrome (43321012334).

The spelling of 22101002212 in words is "twenty-two billion, one hundred one million, two thousand, two hundred twelve".