22101201312 has 24 divisors (see below), whose sum is σ = 58015653696. Its totient is φ = 7367067072.

The previous prime is 22101201277. The next prime is 22101201323. The reversal of 22101201312 is 21310210122.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 22101201291 and 22101201300.

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, 115110328 + ... + 115110519.

It is an arithmetic number, because the mean of its divisors is an integer number (2417318904).

Almost surely, 2^22101201312 is an apocalyptic number.

It is an amenable number.

22101201312 is an abundant number, since it is smaller than the sum of its proper divisors (35914452384).

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

22101201312 is a wasteful number, since it uses less digits than its factorization.

22101201312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230220860 (or 230220852 counting only the distinct ones).

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

Adding to 22101201312 its reverse (21310210122), we get a palindrome (43411411434).

The spelling of 22101201312 in words is "twenty-two billion, one hundred one million, two hundred one thousand, three hundred twelve".