11122020100 has 72 divisors (see below), whose sum is σ = 24559414208. Its totient is φ = 4370889600.

The previous prime is 11122020089. The next prime is 11122020113. The reversal of 11122020100 is 102022111.

It is a super-2 number, since 2×11122020100² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

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, 2818729 + ... + 2822671.

Almost surely, 2^11122020100 is an apocalyptic number.

11122020100 is a gapful number since it is divisible by the number (10) 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 11122020100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12279707104).

11122020100 is an abundant number, since it is smaller than the sum of its proper divisors (13437394108).

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

11122020100 is a wasteful number, since it uses less digits than its factorization.

11122020100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4445 (or 4438 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 11122020100 its reverse (102022111), we get a palindrome (11224042211).

The spelling of 11122020100 in words is "eleven billion, one hundred twenty-two million, twenty thousand, one hundred".