1011111045 has 32 divisors (see below), whose sum is σ = 1893991680. Its totient is φ = 450946560.

The previous prime is 1011110999. The next prime is 1011111053. The reversal of 1011111045 is 5401111101.

It is not a de Polignac number, because 1011111045 - 2⁹ = 1011110533 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 113130 + ... + 121739.

It is an arithmetic number, because the mean of its divisors is an integer number (59187240).

Almost surely, 2^1011111045 is an apocalyptic number.

1011111045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1011111045 is a deficient number, since it is larger than the sum of its proper divisors (882880635).

1011111045 is a wasteful number, since it uses less digits than its factorization.

1011111045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234925.

The product of its (nonzero) digits is 20, while the sum is 15.

The square root of 1011111045 is about 31797.9723410157. The cubic root of 1011111045 is about 1003.6900484606.

Adding to 1011111045 its reverse (5401111101), we get a palindrome (6412222146).

The spelling of 1011111045 in words is "one billion, eleven million, one hundred eleven thousand, forty-five".