111051015055 has 4 divisors (see below), whose sum is σ = 133261218072. Its totient is φ = 88840812040.

The previous prime is 111051015043. The next prime is 111051015077. The reversal of 111051015055 is 550510150111.

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

It is not a de Polignac number, because 111051015055 - 2¹⁹ = 111050490767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11105101501 + ... + 11105101510.

It is an arithmetic number, because the mean of its divisors is an integer number (33315304518).

Almost surely, 2^111051015055 is an apocalyptic number.

111051015055 is a deficient number, since it is larger than the sum of its proper divisors (22210203017).

111051015055 is an equidigital number, since it uses as much as digits as its factorization.

111051015055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22210203016.

The product of its (nonzero) digits is 625, while the sum is 25.

Adding to 111051015055 its reverse (550510150111), we get a palindrome (661561165166).

The spelling of 111051015055 in words is "one hundred eleven billion, fifty-one million, fifteen thousand, fifty-five".