11221120011021 has 4 divisors (see below), whose sum is σ = 14961493348032. Its totient is φ = 7480746674012.

The previous prime is 11221120010999. The next prime is 11221120011037. The reversal of 11221120011021 is 12011002112211.

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 11221120011021 - 2³⁷ = 11083681057549 is a prime.

It is a super-2 number, since 2×11221120011021² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221120011721) 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, 1870186668501 + ... + 1870186668506.

It is an arithmetic number, because the mean of its divisors is an integer number (3740373337008).

Almost surely, 2^{11221120011021} is an apocalyptic number.

It is an amenable number.

11221120011021 is a deficient number, since it is larger than the sum of its proper divisors (3740373337011).

11221120011021 is an equidigital number, since it uses as much as digits as its factorization.

11221120011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3740373337010.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11221120011021 its reverse (12011002112211), we get a palindrome (23232122123232).

The spelling of 11221120011021 in words is "eleven trillion, two hundred twenty-one billion, one hundred twenty million, eleven thousand, twenty-one".