9912100022 has 48 divisors (see below), whose sum is σ = 17262744576. Its totient is φ = 4258623600.

The previous prime is 9912100021. The next prime is 9912100031. The reversal of 9912100022 is 2200012199.

It is a happy number.

It is a super-2 number, since 2×9912100022² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9912099964 and 9912100000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9912100021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 307223 + ... + 337949.

It is an arithmetic number, because the mean of its divisors is an integer number (359640512).

Almost surely, 2^9912100022 is an apocalyptic number.

9912100022 is a deficient number, since it is larger than the sum of its proper divisors (7350644554).

9912100022 is a wasteful number, since it uses less digits than its factorization.

9912100022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30825 (or 30814 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 9912100022 is about 99559.5300410764. The cubic root of 9912100022 is about 2148.1036115200.

It can be divided in two parts, 99 and 12100022, that added together give a palindrome (12100121).

The spelling of 9912100022 in words is "nine billion, nine hundred twelve million, one hundred thousand, twenty-two".