1122122200212 has 36 divisors (see below), whose sum is σ = 3054665990740. Its totient is φ = 345268369152.

The previous prime is 1122122200207. The next prime is 1122122200219. The reversal of 1122122200212 is 2120022212211.

It is a happy number.

1122122200212 is a `hidden beast` number, since 11 + 221 + 2 + 220 + 0 + 212 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 46309318416 + 1075812881796 = 215196^2 + 1037214^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122122200219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1198848037 + ... + 1198848972.

Almost surely, 2^{1122122200212} is an apocalyptic number.

1122122200212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1122122200212 is an abundant number, since it is smaller than the sum of its proper divisors (1932543790528).

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

1122122200212 is a wasteful number, since it uses less digits than its factorization.

1122122200212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2397697032 (or 2397697027 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1122122200212 its reverse (2120022212211), we get a palindrome (3242144412423).

The spelling of 1122122200212 in words is "one trillion, one hundred twenty-two billion, one hundred twenty-two million, two hundred thousand, two hundred twelve".