11212220100 has 36 divisors (see below), whose sum is σ = 32440691024. Its totient is φ = 2989925280.

The previous prime is 11212220099. The next prime is 11212220141. The reversal of 11212220100 is 102221211.

It is a Harshad number since it is a multiple of its sum of digits (12).

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, 18686734 + ... + 18687333.

Almost surely, 2^11212220100 is an apocalyptic number.

11212220100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11212220100 is an abundant number, since it is smaller than the sum of its proper divisors (21228470924).

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

11212220100 is a wasteful number, since it uses less digits than its factorization.

11212220100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37374084 (or 37374077 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 11212220100 its reverse (102221211), we get a palindrome (11314441311).

The spelling of 11212220100 in words is "eleven billion, two hundred twelve million, two hundred twenty thousand, one hundred".