1521132421222 has 8 divisors (see below), whose sum is σ = 2286992597472. Its totient is φ = 758801555400.

The previous prime is 1521132421199. The next prime is 1521132421243. The reversal of 1521132421222 is 2221242311251.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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, 882326529 + ... + 882328252.

It is an arithmetic number, because the mean of its divisors is an integer number (285874074684).

Almost surely, 2^{1521132421222} is an apocalyptic number.

1521132421222 is a deficient number, since it is larger than the sum of its proper divisors (765860176250).

1521132421222 is a wasteful number, since it uses less digits than its factorization.

1521132421222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1764655214.

The product of its digits is 3840, while the sum is 28.

Adding to 1521132421222 its reverse (2221242311251), we get a palindrome (3742374732473).

The spelling of 1521132421222 in words is "one trillion, five hundred twenty-one billion, one hundred thirty-two million, four hundred twenty-one thousand, two hundred twenty-two".