1164022021 has 16 divisors (see below), whose sum is σ = 1218369600. Its totient is φ = 1111144320.

The previous prime is 1164022003. The next prime is 1164022031. The reversal of 1164022021 is 1202204611.

It is a cyclic number.

It is not a de Polignac number, because 1164022021 - 2⁷ = 1164021893 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1164022021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1164022031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 429930 + ... + 432628.

It is an arithmetic number, because the mean of its divisors is an integer number (76148100).

Almost surely, 2^1164022021 is an apocalyptic number.

It is an amenable number.

1164022021 is a deficient number, since it is larger than the sum of its proper divisors (54347579).

1164022021 is a wasteful number, since it uses less digits than its factorization.

1164022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2964.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1164022021 is about 34117.7669404080. The cubic root of 1164022021 is about 1051.9305438417.

Adding to 1164022021 its reverse (1202204611), we get a palindrome (2366226632).

The spelling of 1164022021 in words is "one billion, one hundred sixty-four million, twenty-two thousand, twenty-one".