1053820121 has 2 divisors, whose sum is σ = 1053820122. Its totient is φ = 1053820120.

The previous prime is 1053820111. The next prime is 1053820129. The reversal of 1053820121 is 1210283501.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1052353600 + 1466521 = 32440^2 + 1211^2 .

It is a cyclic number.

It is not a de Polignac number, because 1053820121 - 2²² = 1049625817 is a prime.

It is a super-2 number, since 2×1053820121² = 2221073694848909282, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1053820129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 526910060 + 526910061.

It is an arithmetic number, because the mean of its divisors is an integer number (526910061).

Almost surely, 2^1053820121 is an apocalyptic number.

It is an amenable number.

1053820121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1053820121 is an equidigital number, since it uses as much as digits as its factorization.

1053820121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 1053820121 is about 32462.5957218458. The cubic root of 1053820121 is about 1017.6274862748.

The spelling of 1053820121 in words is "one billion, fifty-three million, eight hundred twenty thousand, one hundred twenty-one".