111451433401 has 12 divisors (see below), whose sum is σ = 141433730640. Its totient is φ = 86845272360.

The previous prime is 111451433393. The next prime is 111451433497. The reversal of 111451433401 is 104334154111.

It is not a de Polignac number, because 111451433401 - 2³ = 111451433393 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 111451433401.

It is not an unprimeable number, because it can be changed into a prime (111451433501) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 103386691 + ... + 103387768.

It is an arithmetic number, because the mean of its divisors is an integer number (11786144220).

Almost surely, 2^111451433401 is an apocalyptic number.

111451433401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111451433401 is a deficient number, since it is larger than the sum of its proper divisors (29982297239).

111451433401 is a wasteful number, since it uses less digits than its factorization.

111451433401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206774484 (or 206774477 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

Adding to 111451433401 its reverse (104334154111), we get a palindrome (215785587512).

The spelling of 111451433401 in words is "one hundred eleven billion, four hundred fifty-one million, four hundred thirty-three thousand, four hundred one".