111401011 has 4 divisors (see below), whose sum is σ = 114994624. Its totient is φ = 107807400.

The previous prime is 111400999. The next prime is 111401039. The reversal of 111401011 is 110104111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110104111 = 13 ⋅8469547.

It is a cyclic number.

It is not a de Polignac number, because 111401011 - 2¹³ = 111392819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111401611) 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, 1796760 + ... + 1796821.

It is an arithmetic number, because the mean of its divisors is an integer number (28748656).

Almost surely, 2^111401011 is an apocalyptic number.

111401011 is a deficient number, since it is larger than the sum of its proper divisors (3593613).

111401011 is an equidigital number, since it uses as much as digits as its factorization.

111401011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3593612.

The product of its (nonzero) digits is 4, while the sum is 10.

The square root of 111401011 is about 10554.6677351776. The cubic root of 111401011 is about 481.1676016571.

Adding to 111401011 its reverse (110104111), we get a palindrome (221505122).

The spelling of 111401011 in words is "one hundred eleven million, four hundred one thousand, eleven".