1140020111 has 2 divisors, whose sum is σ = 1140020112. Its totient is φ = 1140020110.

The previous prime is 1140020107. The next prime is 1140020137. The reversal of 1140020111 is 1110200411.

It is a weak prime.

It is an emirp because it is prime and its reverse (1110200411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1140020111 - 2² = 1140020107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1140020092 and 1140020101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1140025111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 570010055 + 570010056.

It is an arithmetic number, because the mean of its divisors is an integer number (570010056).

Almost surely, 2^1140020111 is an apocalyptic number.

1140020111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1140020111 is an equidigital number, since it uses as much as digits as its factorization.

1140020111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1140020111 is about 33764.1838491618. The cubic root of 1140020111 is about 1044.6500697201.

Adding to 1140020111 its reverse (1110200411), we get a palindrome (2250220522).

The spelling of 1140020111 in words is "one billion, one hundred forty million, twenty thousand, one hundred eleven".