12222222022100 has 36 divisors (see below), whose sum is σ = 26538113235900. Its totient is φ = 4885959509760.

The previous prime is 12222222022067. The next prime is 12222222022123. The reversal of 12222222022100 is 122022222221.

It can be written as a sum of positive squares in 6 ways, for example, as 499569067204 + 11722652954896 = 706802^2 + 3423836^2 .

It is a super-2 number, since 2×12222222022100² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36448505 + ... + 36782304.

Almost surely, 2^{12222222022100} is an apocalyptic number.

12222222022100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12222222022100 is an abundant number, since it is smaller than the sum of its proper divisors (14315891213800).

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

12222222022100 is a wasteful number, since it uses less digits than its factorization.

12222222022100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73232492 (or 73232485 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 12222222022100 its reverse (122022222221), we get a palindrome (12344244244321).

It can be divided in two parts, 122 and 22222022100, that added together give a palindrome (22222022222).

The spelling of 12222222022100 in words is "twelve trillion, two hundred twenty-two billion, two hundred twenty-two million, twenty-two thousand, one hundred".