111010203221 has 2 divisors, whose sum is σ = 111010203222. Its totient is φ = 111010203220.

The previous prime is 111010203211. The next prime is 111010203233. The reversal of 111010203221 is 122302010111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93857062321 + 17153140900 = 306361^2 + 130970^2 .

It is a cyclic number.

It is not a de Polignac number, because 111010203221 - 2²² = 111006008917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111010203196 and 111010203205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111010203211) 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 as a sum of consecutive naturals, namely, 55505101610 + 55505101611.

It is an arithmetic number, because the mean of its divisors is an integer number (55505101611).

Almost surely, 2^111010203221 is an apocalyptic number.

It is an amenable number.

111010203221 is a deficient number, since it is larger than the sum of its proper divisors (1).

111010203221 is an equidigital number, since it uses as much as digits as its factorization.

111010203221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 111010203221 its reverse (122302010111), we get a palindrome (233312213332).

The spelling of 111010203221 in words is "one hundred eleven billion, ten million, two hundred three thousand, two hundred twenty-one".