1021140011 has 4 divisors (see below), whose sum is σ = 1021382712. Its totient is φ = 1020897312.

The previous prime is 1021139983. The next prime is 1021140041. The reversal of 1021140011 is 1100411201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1021140011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021139974 and 1021140001.

It is not an unprimeable number, because it can be changed into a prime (1021140041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114926 + ... + 123491.

It is an arithmetic number, because the mean of its divisors is an integer number (255345678).

Almost surely, 2^1021140011 is an apocalyptic number.

1021140011 is a deficient number, since it is larger than the sum of its proper divisors (242701).

1021140011 is an equidigital number, since it uses as much as digits as its factorization.

1021140011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242700.

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

The square root of 1021140011 is about 31955.2814257675. The cubic root of 1021140011 is about 1006.9975898543.

Adding to 1021140011 its reverse (1100411201), we get a palindrome (2121551212).

The spelling of 1021140011 in words is "one billion, twenty-one million, one hundred forty thousand, eleven".