111420201 has 4 divisors (see below), whose sum is σ = 148560272. Its totient is φ = 74280132.

The previous prime is 111420191. The next prime is 111420223. The reversal of 111420201 is 102024111.

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.

It is not a de Polignac number, because 111420201 - 2⁶ = 111420137 is a prime.

It is a super-2 number, since 2×111420201² = 24828922381760802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111420401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18570031 + ... + 18570036.

It is an arithmetic number, because the mean of its divisors is an integer number (37140068).

Almost surely, 2^111420201 is an apocalyptic number.

It is an amenable number.

111420201 is a deficient number, since it is larger than the sum of its proper divisors (37140071).

111420201 is an equidigital number, since it uses as much as digits as its factorization.

111420201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37140070.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 111420201 is about 10555.5767724933. The cubic root of 111420201 is about 481.1952288035.

Adding to 111420201 its reverse (102024111), we get a palindrome (213444312).

The spelling of 111420201 in words is "one hundred eleven million, four hundred twenty thousand, two hundred one".