22001022112 has 12 divisors (see below), whose sum is σ = 43314512346. Its totient is φ = 11000511040.

The previous prime is 22001022079. The next prime is 22001022151. The reversal of 22001022112 is 21122010022.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 20792486416 + 1208535696 = 144196^2 + 34764^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22001022092 and 22001022101.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343765939 + ... + 343766002.

Almost surely, 2^22001022112 is an apocalyptic number.

It is an amenable number.

22001022112 is a deficient number, since it is larger than the sum of its proper divisors (21313490234).

22001022112 is an equidigital number, since it uses as much as digits as its factorization.

22001022112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687531951 (or 687531943 counting only the distinct ones).

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

Adding to 22001022112 its reverse (21122010022), we get a palindrome (43123032134).

The spelling of 22001022112 in words is "twenty-two billion, one million, twenty-two thousand, one hundred twelve".