1351225201521 has 16 divisors (see below), whose sum is σ = 1940542954560. Its totient is φ = 831385135680.

The previous prime is 1351225201493. The next prime is 1351225201523. The reversal of 1351225201521 is 1251025221531.

It is not a de Polignac number, because 1351225201521 - 2¹⁴ = 1351225185137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1351225201523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2638215 + ... + 3108476.

It is an arithmetic number, because the mean of its divisors is an integer number (121283934660).

Almost surely, 2^{1351225201521} is an apocalyptic number.

It is an amenable number.

1351225201521 is a deficient number, since it is larger than the sum of its proper divisors (589317753039).

1351225201521 is a wasteful number, since it uses less digits than its factorization.

1351225201521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5752736.

The product of its (nonzero) digits is 6000, while the sum is 30.

The spelling of 1351225201521 in words is "one trillion, three hundred fifty-one billion, two hundred twenty-five million, two hundred one thousand, five hundred twenty-one".