111022300021 has 4 divisors (see below), whose sum is σ = 111023024652. Its totient is φ = 111021575392.

The previous prime is 111022300019. The next prime is 111022300043. The reversal of 111022300021 is 120003220111.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 93923860900 + 17098439121 = 306470^2 + 130761^2 .

It is a cyclic number.

It is not a de Polignac number, because 111022300021 - 2¹ = 111022300019 is a prime.

It is a super-2 number, since 2×111022300021² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111022299974 and 111022300010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111022300321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32296 + ... + 472321.

It is an arithmetic number, because the mean of its divisors is an integer number (27755756163).

Almost surely, 2^111022300021 is an apocalyptic number.

It is an amenable number.

111022300021 is a deficient number, since it is larger than the sum of its proper divisors (724631).

111022300021 is an equidigital number, since it uses as much as digits as its factorization.

111022300021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724630.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 111022300021 its reverse (120003220111), we get a palindrome (231025520132).

The spelling of 111022300021 in words is "one hundred eleven billion, twenty-two million, three hundred thousand, twenty-one".