11200120100021 has 4 divisors (see below), whose sum is σ = 11200354956000. Its totient is φ = 11199885244044.

The previous prime is 11200120100011. The next prime is 11200120100027. The reversal of 11200120100021 is 12000102100211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11200120100021 - 2¹⁴ = 11200120083637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11200120099975 and 11200120100011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11200120100027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117356441 + ... + 117451838.

It is an arithmetic number, because the mean of its divisors is an integer number (2800088739000).

Almost surely, 2^{11200120100021} is an apocalyptic number.

It is an amenable number.

11200120100021 is a deficient number, since it is larger than the sum of its proper divisors (234855979).

11200120100021 is an equidigital number, since it uses as much as digits as its factorization.

11200120100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234855978.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 11200120100021 its reverse (12000102100211), we get a palindrome (23200222200232).

The spelling of 11200120100021 in words is "eleven trillion, two hundred billion, one hundred twenty million, one hundred thousand, twenty-one".