111121778294 has 4 divisors (see below), whose sum is σ = 166682667444. Its totient is φ = 55560889146.

The previous prime is 111121778267. The next prime is 111121778347. The reversal of 111121778294 is 492877121111.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×111121778294² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27780444572 + ... + 27780444575.

It is an arithmetic number, because the mean of its divisors is an integer number (41670666861).

Almost surely, 2^111121778294 is an apocalyptic number.

111121778294 is a deficient number, since it is larger than the sum of its proper divisors (55560889150).

111121778294 is an equidigital number, since it uses as much as digits as its factorization.

111121778294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55560889149.

The product of its digits is 56448, while the sum is 44.

The spelling of 111121778294 in words is "one hundred eleven billion, one hundred twenty-one million, seven hundred seventy-eight thousand, two hundred ninety-four".