11200121210221 has 4 divisors (see below), whose sum is σ = 11200137485472. Its totient is φ = 11200104934972.

The previous prime is 11200121210183. The next prime is 11200121210237. The reversal of 11200121210221 is 12201212100211.

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 11200121210221 - 2⁷ = 11200121210093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11200121210195 and 11200121210204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11200121210521) 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, 7057591 + ... + 8497636.

It is an arithmetic number, because the mean of its divisors is an integer number (2800034371368).

Almost surely, 2^{11200121210221} is an apocalyptic number.

It is an amenable number.

11200121210221 is a deficient number, since it is larger than the sum of its proper divisors (16275251).

11200121210221 is an equidigital number, since it uses as much as digits as its factorization.

11200121210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16275250.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 11200121210221 its reverse (12201212100211), we get a palindrome (23401333310432).

The spelling of 11200121210221 in words is "eleven trillion, two hundred billion, one hundred twenty-one million, two hundred ten thousand, two hundred twenty-one".