11221011100 has 72 divisors (see below), whose sum is σ = 27068628608. Its totient is φ = 4009478400.

The previous prime is 11221011097. The next prime is 11221011103. The reversal of 11221011100 is 111012211.

It is an interprime number because it is at equal distance from previous prime (11221011097) and next prime (11221011103).

It is a super-2 number, since 2×11221011100² (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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221011103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 98919 + ... + 179518.

Almost surely, 2^11221011100 is an apocalyptic number.

11221011100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11221011100 is an abundant number, since it is smaller than the sum of its proper divisors (15847617508).

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

11221011100 is a wasteful number, since it uses less digits than its factorization.

11221011100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278495 (or 278488 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 11221011100 its reverse (111012211), we get a palindrome (11332023311).

The spelling of 11221011100 in words is "eleven billion, two hundred twenty-one million, eleven thousand, one hundred".