111191201 has 4 divisors (see below), whose sum is σ = 121299504. Its totient is φ = 101082900.

The previous prime is 111191153. The next prime is 111191219. The reversal of 111191201 is 102191111.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 102191111 = 11 ⋅9290101.

It is a cyclic number.

It is not a de Polignac number, because 111191201 - 2¹⁸ = 110929057 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 111191201.

It is not an unprimeable number, because it can be changed into a prime (111191231) 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, 5054135 + ... + 5054156.

It is an arithmetic number, because the mean of its divisors is an integer number (30324876).

Almost surely, 2^111191201 is an apocalyptic number.

111191201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111191201 is a deficient number, since it is larger than the sum of its proper divisors (10108303).

111191201 is a wasteful number, since it uses less digits than its factorization.

111191201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10108302.

The product of its (nonzero) digits is 18, while the sum is 17.

The square root of 111191201 is about 10544.7238465500. The cubic root of 111191201 is about 480.8653386346.

The spelling of 111191201 in words is "one hundred eleven million, one hundred ninety-one thousand, two hundred one".