1011213065 has 8 divisors (see below), whose sum is σ = 1220235840. Its totient is φ = 804450352.

The previous prime is 1011213061. The next prime is 1011213097. The reversal of 1011213065 is 5603121101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1011213065 - 2² = 1011213061 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1011213061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 564029 + ... + 565818.

It is an arithmetic number, because the mean of its divisors is an integer number (152529480).

Almost surely, 2^1011213065 is an apocalyptic number.

It is an amenable number.

1011213065 is a deficient number, since it is larger than the sum of its proper divisors (209022775).

1011213065 is a wasteful number, since it uses less digits than its factorization.

1011213065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130031.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 1011213065 is about 31799.5764908906. The cubic root of 1011213065 is about 1003.7238044018.

Adding to 1011213065 its reverse (5603121101), we get a palindrome (6614334166).

The spelling of 1011213065 in words is "one billion, eleven million, two hundred thirteen thousand, sixty-five".