1521132421199 has 2 divisors, whose sum is σ = 1521132421200. Its totient is φ = 1521132421198.

The previous prime is 1521132421187. The next prime is 1521132421243. The reversal of 1521132421199 is 9911242311251.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1521132421199 - 2⁸ = 1521132420943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1521132421139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 760566210599 + 760566210600.

It is an arithmetic number, because the mean of its divisors is an integer number (760566210600).

Almost surely, 2^{1521132421199} is an apocalyptic number.

1521132421199 is a deficient number, since it is larger than the sum of its proper divisors (1).

1521132421199 is an equidigital number, since it uses as much as digits as its factorization.

1521132421199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 41.

The spelling of 1521132421199 in words is "one trillion, five hundred twenty-one billion, one hundred thirty-two million, four hundred twenty-one thousand, one hundred ninety-nine".