1012540111 has 24 divisors (see below), whose sum is σ = 1177701120. Its totient is φ = 863164800.

The previous prime is 1012540093. The next prime is 1012540117. The reversal of 1012540111 is 1110452101.

It is a de Polignac number, because none of the positive numbers 2^k-1012540111 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 (1012540117) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1369780 + ... + 1370518.

It is an arithmetic number, because the mean of its divisors is an integer number (49070880).

Almost surely, 2^1012540111 is an apocalyptic number.

1012540111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1012540111 is a deficient number, since it is larger than the sum of its proper divisors (165161009).

1012540111 is a wasteful number, since it uses less digits than its factorization.

1012540111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215 (or 1198 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 16.

The square root of 1012540111 is about 31820.4354307102. The cubic root of 1012540111 is about 1004.1626850099.

Adding to 1012540111 its reverse (1110452101), we get a palindrome (2122992212).

The spelling of 1012540111 in words is "one billion, twelve million, five hundred forty thousand, one hundred eleven".