1164221311 has 16 divisors (see below), whose sum is σ = 1287145728. Its totient is φ = 1044227200.

The previous prime is 1164221309. The next prime is 1164221321. The reversal of 1164221311 is 1131224611.

It is a cyclic number.

It is not a de Polignac number, because 1164221311 - 2¹ = 1164221309 is a prime.

It is a super-2 number, since 2×1164221311² = 2710822521973117442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1164221321) 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, 307671 + ... + 311431.

It is an arithmetic number, because the mean of its divisors is an integer number (80446608).

Almost surely, 2^1164221311 is an apocalyptic number.

1164221311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1164221311 is a deficient number, since it is larger than the sum of its proper divisors (122924417).

1164221311 is a wasteful number, since it uses less digits than its factorization.

1164221311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4142.

The product of its digits is 288, while the sum is 22.

The square root of 1164221311 is about 34120.6874344583. The cubic root of 1164221311 is about 1051.9905734263.

Adding to 1164221311 its reverse (1131224611), we get a palindrome (2295445922).

The spelling of 1164221311 in words is "one billion, one hundred sixty-four million, two hundred twenty-one thousand, three hundred eleven".