11100212210021 has 12 divisors (see below), whose sum is σ = 12863536267200. Its totient is φ = 9497507770560.

The previous prime is 11100212209991. The next prime is 11100212210027. The reversal of 11100212210021 is 12001221200111.

It is a de Polignac number, because none of the positive numbers 2^k-11100212210021 is a prime.

It is a super-2 number, since 2×11100212210021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11100212209978 and 11100212210005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11100212210027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1745862221 + ... + 1745868578.

It is an arithmetic number, because the mean of its divisors is an integer number (1071961355600).

Almost surely, 2^{11100212210021} is an apocalyptic number.

11100212210021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11100212210021 is a deficient number, since it is larger than the sum of its proper divisors (1763324057179).

11100212210021 is a wasteful number, since it uses less digits than its factorization.

11100212210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3491730844 (or 3491730827 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11100212210021 its reverse (12001221200111), we get a palindrome (23101433410132).

The spelling of 11100212210021 in words is "eleven trillion, one hundred billion, two hundred twelve million, two hundred ten thousand, twenty-one".