111020121303 has 32 divisors (see below), whose sum is σ = 187110852096. Its totient is φ = 56977354368.

The previous prime is 111020121283. The next prime is 111020121319. The reversal of 111020121303 is 303121020111.

It is a happy number.

It is not a de Polignac number, because 111020121303 - 2⁹ = 111020120791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111020121323) 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, 5485401 + ... + 5505602.

It is an arithmetic number, because the mean of its divisors is an integer number (5847214128).

Almost surely, 2^111020121303 is an apocalyptic number.

111020121303 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

111020121303 is a deficient number, since it is larger than the sum of its proper divisors (76090730793).

111020121303 is a wasteful number, since it uses less digits than its factorization.

111020121303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10991063.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 111020121303 its reverse (303121020111), we get a palindrome (414141141414).

The spelling of 111020121303 in words is "one hundred eleven billion, twenty million, one hundred twenty-one thousand, three hundred three".