12221201021002 has 8 divisors (see below), whose sum is σ = 19410142798116. Its totient is φ = 5751153421632.

The previous prime is 12221201020999. The next prime is 12221201021021. The reversal of 12221201021002 is 20012010212221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11748997037761 + 472203983241 = 3427681^2 + 687171^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179723544393 + ... + 179723544460.

Almost surely, 2^{12221201021002} is an apocalyptic number.

12221201021002 is a deficient number, since it is larger than the sum of its proper divisors (7188941777114).

12221201021002 is a wasteful number, since it uses less digits than its factorization.

12221201021002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359447088872.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12221201021002 its reverse (20012010212221), we get a palindrome (32233211233223).

The spelling of 12221201021002 in words is "twelve trillion, two hundred twenty-one billion, two hundred one million, twenty-one thousand, two".