11220001122021 has 4 divisors (see below), whose sum is σ = 14960001496032. Its totient is φ = 7480000748012.

The previous prime is 11220001122019. The next prime is 11220001122041. The reversal of 11220001122021 is 12022110002211.

11220001122021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11220001122021 - 2¹ = 11220001122019 is a prime.

It is a super-2 number, since 2×11220001122021² (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 (11220001122041) 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, 1870000187001 + ... + 1870000187006.

It is an arithmetic number, because the mean of its divisors is an integer number (3740000374008).

Almost surely, 2^{11220001122021} is an apocalyptic number.

It is an amenable number.

11220001122021 is a deficient number, since it is larger than the sum of its proper divisors (3740000374011).

11220001122021 is an equidigital number, since it uses as much as digits as its factorization.

11220001122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3740000374010.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 11220001122021 its reverse (12022110002211), we get a palindrome (23242111124232).

It can be divided in two parts, 1122000 and 1122021, that added together give a triangular number (2244021 = T₂₁₁₈).

The spelling of 11220001122021 in words is "eleven trillion, two hundred twenty billion, one million, one hundred twenty-two thousand, twenty-one".