111213901 has 4 divisors (see below), whose sum is σ = 116049312. Its totient is φ = 106378492.

The previous prime is 111213877. The next prime is 111213917. The reversal of 111213901 is 109312111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 111213901 - 2¹¹ = 111211853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111213961) 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, 2417671 + ... + 2417716.

It is an arithmetic number, because the mean of its divisors is an integer number (29012328).

Almost surely, 2^111213901 is an apocalyptic number.

It is an amenable number.

111213901 is a deficient number, since it is larger than the sum of its proper divisors (4835411).

111213901 is an equidigital number, since it uses as much as digits as its factorization.

111213901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4835410.

The product of its (nonzero) digits is 54, while the sum is 19.

The square root of 111213901 is about 10545.8001593051. The cubic root of 111213901 is about 480.8980597503.

The spelling of 111213901 in words is "one hundred eleven million, two hundred thirteen thousand, nine hundred one".