2222122122100 has 72 divisors (see below), whose sum is σ = 5092012701440. Its totient is φ = 839376794880.

The previous prime is 2222122122071. The next prime is 2222122122109. The reversal of 2222122122100 is 12212212222.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222122122109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1273572 + ... + 2462971.

Almost surely, 2^{2222122122100} is an apocalyptic number.

2222122122100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2222122122100 is an abundant number, since it is smaller than the sum of its proper divisors (2869890579340).

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

2222122122100 is a wasteful number, since it uses less digits than its factorization.

2222122122100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3736889 (or 3736882 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 2222122122100 its reverse (12212212222), we get a palindrome (2234334334322).

It can be divided in two parts, 22 and 22122122100, that added together give a palindrome (22122122122).

The spelling of 2222122122100 in words is "two trillion, two hundred twenty-two billion, one hundred twenty-two million, one hundred twenty-two thousand, one hundred".