111022426261 has 4 divisors (see below), whose sum is σ = 111054232224. Its totient is φ = 110990620300.

The previous prime is 111022426237. The next prime is 111022426279. The reversal of 111022426261 is 162624220111.

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 111022426261 - 2⁹ = 111022425749 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 (111022426231) 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, 15897745 + ... + 15904726.

It is an arithmetic number, because the mean of its divisors is an integer number (27763558056).

Almost surely, 2^111022426261 is an apocalyptic number.

It is an amenable number.

111022426261 is a deficient number, since it is larger than the sum of its proper divisors (31805963).

111022426261 is an equidigital number, since it uses as much as digits as its factorization.

111022426261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31805962.

The product of its (nonzero) digits is 2304, while the sum is 28.

Adding to 111022426261 its reverse (162624220111), we get a palindrome (273646646372).

The spelling of 111022426261 in words is "one hundred eleven billion, twenty-two million, four hundred twenty-six thousand, two hundred sixty-one".