1111101240 has 32 divisors (see below), whose sum is σ = 3333304080. Its totient is φ = 296293632.

The previous prime is 1111101221. The next prime is 1111101263. The reversal of 1111101240 is 421011111.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4629469 + ... + 4629708.

Almost surely, 2^1111101240 is an apocalyptic number.

1111101240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1111101240 is an abundant number, since it is smaller than the sum of its proper divisors (2222202840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1111101240 is a wasteful number, since it uses less digits than its factorization.

1111101240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9259191 (or 9259187 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

The square root of 1111101240 is about 33333.1852663378. The cubic root of 1111101240 is about 1035.7411014585.

Adding to 1111101240 its reverse (421011111), we get a palindrome (1532112351).

The spelling of 1111101240 in words is "one billion, one hundred eleven million, one hundred one thousand, two hundred forty".