111202212013021 has 2 divisors, whose sum is σ = 111202212013022. Its totient is φ = 111202212013020.

The previous prime is 111202212012971. The next prime is 111202212013027. The reversal of 111202212013021 is 120310212202111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95681850524100 + 15520361488921 = 9781710^2 + 3939589^2 .

It is a cyclic number.

It is not a de Polignac number, because 111202212013021 - 2⁹ = 111202212012509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111202212013021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111202212013027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55601106006510 + 55601106006511.

It is an arithmetic number, because the mean of its divisors is an integer number (55601106006511).

Almost surely, 2^{111202212013021} is an apocalyptic number.

It is an amenable number.

111202212013021 is a deficient number, since it is larger than the sum of its proper divisors (1).

111202212013021 is an equidigital number, since it uses as much as digits as its factorization.

111202212013021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 111202212013021 its reverse (120310212202111), we get a palindrome (231512424215132).

The spelling of 111202212013021 in words is "one hundred eleven trillion, two hundred two billion, two hundred twelve million, thirteen thousand, twenty-one".