111201261 has 8 divisors (see below), whose sum is σ = 151066080. Its totient is φ = 72735312.

The previous prime is 111201257. The next prime is 111201263. The reversal of 111201261 is 162102111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111201261 - 2² = 111201257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111201261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111201263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 349531 + ... + 349848.

It is an arithmetic number, because the mean of its divisors is an integer number (18883260).

Almost surely, 2^111201261 is an apocalyptic number.

It is an amenable number.

111201261 is a deficient number, since it is larger than the sum of its proper divisors (39864819).

111201261 is an equidigital number, since it uses as much as digits as its factorization.

111201261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699435.

The product of its (nonzero) digits is 24, while the sum is 15.

The square root of 111201261 is about 10545.2008515722. The cubic root of 111201261 is about 480.8798402600.

Adding to 111201261 its reverse (162102111), we get a palindrome (273303372).

The spelling of 111201261 in words is "one hundred eleven million, two hundred one thousand, two hundred sixty-one".