10221312212 has 12 divisors (see below), whose sum is σ = 17896487700. Its totient is φ = 5108030016.

The previous prime is 10221312209. The next prime is 10221312253. The reversal of 10221312212 is 21221312201.

It can be written as a sum of positive squares in 2 ways, for example, as 9255594436 + 965717776 = 96206^2 + 31076^2 .

It is a congruent number.

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, 647753 + ... + 663344.

It is an arithmetic number, because the mean of its divisors is an integer number (1491373975).

Almost surely, 2^10221312212 is an apocalyptic number.

It is an amenable number.

10221312212 is a deficient number, since it is larger than the sum of its proper divisors (7675175488).

10221312212 is a wasteful number, since it uses less digits than its factorization.

10221312212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1313050 (or 1313048 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 10221312212 its reverse (21221312201), we get a palindrome (31442624413).

The spelling of 10221312212 in words is "ten billion, two hundred twenty-one million, three hundred twelve thousand, two hundred twelve".