22011012312 has 32 divisors (see below), whose sum is σ = 55263714480. Its totient is φ = 7305512960.

The previous prime is 22011012253. The next prime is 22011012329. The reversal of 22011012312 is 21321011022.

It is a junction number, because it is equal to n+sod(n) for n = 22011012291 and 22011012300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1962489 + ... + 1973672.

Almost surely, 2^22011012312 is an apocalyptic number.

It is an amenable number.

22011012312 is an abundant number, since it is smaller than the sum of its proper divisors (33252702168).

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

22011012312 is a wasteful number, since it uses less digits than its factorization.

22011012312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3936403 (or 3936399 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 22011012312 its reverse (21321011022), we get a palindrome (43332023334).

The spelling of 22011012312 in words is "twenty-two billion, eleven million, twelve thousand, three hundred twelve".