111100202120203 has 4 divisors (see below), whose sum is σ = 111328333952560. Its totient is φ = 110872070287848.

The previous prime is 111100202120113. The next prime is 111100202120251. The reversal of 111100202120203 is 302021202001111.

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

It is a cyclic number.

It is not a de Polignac number, because 111100202120203 - 2²¹ = 111100200023051 is a prime.

It is a super-2 number, since 2×111100202120203² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111100202120273) 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, 114065915448 + ... + 114065916421.

It is an arithmetic number, because the mean of its divisors is an integer number (27832083488140).

Almost surely, 2^{111100202120203} is an apocalyptic number.

111100202120203 is a deficient number, since it is larger than the sum of its proper divisors (228131832357).

111100202120203 is an equidigital number, since it uses as much as digits as its factorization.

111100202120203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228131832356.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 111100202120203 its reverse (302021202001111), we get a palindrome (413121404121314).

It can be divided in two parts, 1111002021 and 20203, that added together give a square (1111022224 = 33332²).

The spelling of 111100202120203 in words is "one hundred eleven trillion, one hundred billion, two hundred two million, one hundred twenty thousand, two hundred three".