11221002002100 has 144 divisors (see below), whose sum is σ = 37500948910656. Its totient is φ = 2560228608000.

The previous prime is 11221002001999. The next prime is 11221002002113. The reversal of 11221002002100 is 120020012211.

It is a super-2 number, since 2×11221002002100² (a number of 27 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 99952831 + ... + 100065030.

It is an arithmetic number, because the mean of its divisors is an integer number (260423256324).

Almost surely, 2^{11221002002100} is an apocalyptic number.

11221002002100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11221002002100 is an abundant number, since it is smaller than the sum of its proper divisors (26279946908556).

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

11221002002100 is a wasteful number, since it uses less digits than its factorization.

11221002002100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200017906 (or 200017899 counting only the distinct ones).

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

Adding to 11221002002100 its reverse (120020012211), we get a palindrome (11341022014311).

The spelling of 11221002002100 in words is "eleven trillion, two hundred twenty-one billion, two million, two thousand, one hundred".