111220230121203 has 32 divisors (see below), whose sum is σ = 175697953666560. Its totient is φ = 61231487385600.

The previous prime is 111220230121199. The next prime is 111220230121241. The reversal of 111220230121203 is 302121032022111.

It is not a de Polignac number, because 111220230121203 - 2² = 111220230121199 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 111220230121203.

It is not an unprimeable number, because it can be changed into a prime (111220230121103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 195248398 + ... + 195817203.

It is an arithmetic number, because the mean of its divisors is an integer number (5490561052080).

Almost surely, 2^{111220230121203} is an apocalyptic number.

111220230121203 is a deficient number, since it is larger than the sum of its proper divisors (64477723545357).

111220230121203 is a wasteful number, since it uses less digits than its factorization.

111220230121203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391066107.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 111220230121203 its reverse (302121032022111), we get a palindrome (413341262143314).

The spelling of 111220230121203 in words is "one hundred eleven trillion, two hundred twenty billion, two hundred thirty million, one hundred twenty-one thousand, two hundred three".