1353120121 has 4 divisors (see below), whose sum is σ = 1354267044. Its totient is φ = 1351973200.

The previous prime is 1353120071. The next prime is 1353120127. The reversal of 1353120121 is 1210213531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1312975225 + 40144896 = 36235^2 + 6336^2 .

It is a cyclic number.

It is not a de Polignac number, because 1353120121 - 2⁹ = 1353119609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1353120127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 571690 + ... + 574051.

It is an arithmetic number, because the mean of its divisors is an integer number (338566761).

Almost surely, 2^1353120121 is an apocalyptic number.

It is an amenable number.

1353120121 is a deficient number, since it is larger than the sum of its proper divisors (1146923).

1353120121 is a wasteful number, since it uses less digits than its factorization.

1353120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146922.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 1353120121 is about 36784.7811057780. The cubic root of 1353120121 is about 1106.0602481058.

Adding to 1353120121 its reverse (1210213531), we get a palindrome (2563333652).

The spelling of 1353120121 in words is "one billion, three hundred fifty-three million, one hundred twenty thousand, one hundred twenty-one".