111221220202203 has 4 divisors (see below), whose sum is σ = 148294960269608. Its totient is φ = 74147480134800.

The previous prime is 111221220202189. The next prime is 111221220202207. The reversal of 111221220202203 is 302202022122111.

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

It is not a de Polignac number, because 111221220202203 - 2⁶ = 111221220202139 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111221220202203.

It is not an unprimeable number, because it can be changed into a prime (111221220202207) 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, 18536870033698 + ... + 18536870033703.

It is an arithmetic number, because the mean of its divisors is an integer number (37073740067402).

Almost surely, 2^{111221220202203} is an apocalyptic number.

111221220202203 is a deficient number, since it is larger than the sum of its proper divisors (37073740067405).

111221220202203 is an equidigital number, since it uses as much as digits as its factorization.

111221220202203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37073740067404.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 111221220202203 its reverse (302202022122111), we get a palindrome (413423242324314).

The spelling of 111221220202203 in words is "one hundred eleven trillion, two hundred twenty-one billion, two hundred twenty million, two hundred two thousand, two hundred three".