1064205121 has 4 divisors (see below), whose sum is σ = 1216234432. Its totient is φ = 912175812.

The previous prime is 1064205119. The next prime is 1064205133. The reversal of 1064205121 is 1215024601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1215024601 = 7 ⋅173574943.

It is a cyclic number.

It is not a de Polignac number, because 1064205121 - 2¹ = 1064205119 is a prime.

It is a super-2 number, since 2×1064205121² = 2265065079125249282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1064205092 and 1064205101.

It is not an unprimeable number, because it can be changed into a prime (1064202121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76014645 + ... + 76014658.

It is an arithmetic number, because the mean of its divisors is an integer number (304058608).

Almost surely, 2^1064205121 is an apocalyptic number.

It is an amenable number.

1064205121 is a deficient number, since it is larger than the sum of its proper divisors (152029311).

1064205121 is an equidigital number, since it uses as much as digits as its factorization.

1064205121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152029310.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 1064205121 is about 32622.1569029394. The cubic root of 1064205121 is about 1020.9593438021.

Adding to 1064205121 its reverse (1215024601), we get a palindrome (2279229722).

The spelling of 1064205121 in words is "one billion, sixty-four million, two hundred five thousand, one hundred twenty-one".