11100102112021 has 4 divisors (see below), whose sum is σ = 11953956120652. Its totient is φ = 10246248103392.

The previous prime is 11100102112013. The next prime is 11100102112093. The reversal of 11100102112021 is 12021120100111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1055322689521 + 10044779422500 = 1027289^2 + 3169350^2 .

It is a cyclic number.

It is not a de Polignac number, because 11100102112021 - 2³ = 11100102112013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 853854008617 = 11100102112021 / (1 + 1 + 1 + 0 + 0 + 1 + 0 + 2 + 1 + 1 + 2 + 0 + 2 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 11100102111992 and 11100102112010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11100102112721) 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 3 ways as a sum of consecutive naturals, for example, 426927004296 + ... + 426927004321.

It is an arithmetic number, because the mean of its divisors is an integer number (2988489030163).

Almost surely, 2^{11100102112021} is an apocalyptic number.

It is an amenable number.

11100102112021 is a deficient number, since it is larger than the sum of its proper divisors (853854008631).

11100102112021 is an equidigital number, since it uses as much as digits as its factorization.

11100102112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853854008630.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11100102112021 its reverse (12021120100111), we get a palindrome (23121222212132).

The spelling of 11100102112021 in words is "eleven trillion, one hundred billion, one hundred two million, one hundred twelve thousand, twenty-one".