1053666121 has 2 divisors, whose sum is σ = 1053666122. Its totient is φ = 1053666120.

The previous prime is 1053666083. The next prime is 1053666151. The reversal of 1053666121 is 1216663501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1016015625 + 37650496 = 31875^2 + 6136^2 .

It is a cyclic number.

It is not a de Polignac number, because 1053666121 - 2¹⁹ = 1053141833 is a prime.

It is a super-2 number, since 2×1053666121² = 2220424589086373282, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1053666151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 526833060 + 526833061.

It is an arithmetic number, because the mean of its divisors is an integer number (526833061).

Almost surely, 2^1053666121 is an apocalyptic number.

It is an amenable number.

1053666121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1053666121 is an equidigital number, since it uses as much as digits as its factorization.

1053666121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 1053666121 is about 32460.2236745220. The cubic root of 1053666121 is about 1017.5779135302.

The spelling of 1053666121 in words is "one billion, fifty-three million, six hundred sixty-six thousand, one hundred twenty-one".