111202212011021 has 4 divisors (see below), whose sum is σ = 111211625568252. Its totient is φ = 111192798453792.

The previous prime is 111202212010979. The next prime is 111202212011053. The reversal of 111202212011021 is 120110212202111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 59514883438921 + 51687328572100 = 7714589^2 + 7189390^2 .

It is a cyclic number.

It is not a de Polignac number, because 111202212011021 - 2¹⁴ = 111202211994637 is a prime.

It is a super-2 number, since 2×111202212011021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111202212013021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4706760896 + ... + 4706784521.

It is an arithmetic number, because the mean of its divisors is an integer number (27802906392063).

Almost surely, 2^{111202212011021} is an apocalyptic number.

It is an amenable number.

111202212011021 is a deficient number, since it is larger than the sum of its proper divisors (9413557231).

111202212011021 is an equidigital number, since it uses as much as digits as its factorization.

111202212011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9413557230.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 111202212011021 its reverse (120110212202111), we get a palindrome (231312424213132).

The spelling of 111202212011021 in words is "one hundred eleven trillion, two hundred two billion, two hundred twelve million, eleven thousand, twenty-one".