11200122220021 has 4 divisors (see below), whose sum is σ = 12800139680032. Its totient is φ = 9600104760012.

The previous prime is 11200122219977. The next prime is 11200122220043. The reversal of 11200122220021 is 12002222100211.

It is a happy number.

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 11200122220021 - 2¹³ = 11200122211829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11200122219977 and 11200122220004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11200122220051) 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, 800008729995 + ... + 800008730008.

It is an arithmetic number, because the mean of its divisors is an integer number (3200034920008).

Almost surely, 2^{11200122220021} is an apocalyptic number.

It is an amenable number.

11200122220021 is a deficient number, since it is larger than the sum of its proper divisors (1600017460011).

11200122220021 is an equidigital number, since it uses as much as digits as its factorization.

11200122220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1600017460010.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 11200122220021 its reverse (12002222100211), we get a palindrome (23202344320232).

The spelling of 11200122220021 in words is "eleven trillion, two hundred billion, one hundred twenty-two million, two hundred twenty thousand, twenty-one".