1140111021 has 16 divisors (see below), whose sum is σ = 1744588800. Its totient is φ = 648763248.

The previous prime is 1140111019. The next prime is 1140111029. The reversal of 1140111021 is 1201110411.

It is not a de Polignac number, because 1140111021 - 2¹ = 1140111019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1140110988 and 1140111006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140111029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108561 + ... + 118598.

It is an arithmetic number, because the mean of its divisors is an integer number (109036800).

Almost surely, 2^1140111021 is an apocalyptic number.

It is an amenable number.

1140111021 is a deficient number, since it is larger than the sum of its proper divisors (604477779).

1140111021 is a wasteful number, since it uses less digits than its factorization.

1140111021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227408.

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

The square root of 1140111021 is about 33765.5300713612. The cubic root of 1140111021 is about 1044.6778372459.

Adding to 1140111021 its reverse (1201110411), we get a palindrome (2341221432).

It can be divided in two parts, 11401 and 11021, that added together give a palindrome (22422).

The spelling of 1140111021 in words is "one billion, one hundred forty million, one hundred eleven thousand, twenty-one".