2122100112 has 160 divisors (see below), whose sum is σ = 6119608320. Its totient is φ = 628277760.

The previous prime is 2122100107. The next prime is 2122100119. The reversal of 2122100112 is 2110012212.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (2122100119) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7888714 + ... + 7888982.

It is an arithmetic number, because the mean of its divisors is an integer number (38247552).

Almost surely, 2^2122100112 is an apocalyptic number.

2122100112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2122100112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3059804160).

2122100112 is an abundant number, since it is smaller than the sum of its proper divisors (3997508208).

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

2122100112 is a wasteful number, since it uses less digits than its factorization.

2122100112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581 (or 575 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 2122100112 is about 46066.2578467147. The cubic root of 2122100112 is about 1285.0557111710.

Adding to 2122100112 its reverse (2110012212), we get a palindrome (4232112324).

It can be divided in two parts, 2122100 and 112, that added together give a palindrome (2122212).

The spelling of 2122100112 in words is "two billion, one hundred twenty-two million, one hundred thousand, one hundred twelve".