11111122022100 has 72 divisors (see below), whose sum is σ = 33840189193440. Its totient is φ = 2807020298880.

The previous prime is 11111122022089. The next prime is 11111122022137. The reversal of 11111122022100 is 122022111111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 11111122022100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 974654127 + ... + 974665526.

Almost surely, 2^{11111122022100} is an apocalyptic number.

11111122022100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11111122022100 is an abundant number, since it is smaller than the sum of its proper divisors (22729067171340).

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

11111122022100 is a wasteful number, since it uses less digits than its factorization.

11111122022100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1949319689 (or 1949319682 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11111122022100 its reverse (122022111111), we get a palindrome (11233144133211).

The spelling of 11111122022100 in words is "eleven trillion, one hundred eleven billion, one hundred twenty-two million, twenty-two thousand, one hundred".