12203200121021 has 12 divisors (see below), whose sum is σ = 15287525427132. Its totient is φ = 9655279216128.

The previous prime is 12203200120999. The next prime is 12203200121023. The reversal of 12203200121021 is 12012100230221.

It can be written as a sum of positive squares in 2 ways, for example, as 7414919611225 + 4788280509796 = 2723035^2 + 2188214^2 .

It is not a de Polignac number, because 12203200121021 - 2¹⁴ = 12203200104637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12203200121023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9578649380 + ... + 9578650653.

It is an arithmetic number, because the mean of its divisors is an integer number (1273960452261).

Almost surely, 2^{12203200121021} is an apocalyptic number.

It is an amenable number.

12203200121021 is a deficient number, since it is larger than the sum of its proper divisors (3084325306111).

12203200121021 is a wasteful number, since it uses less digits than its factorization.

12203200121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19157300060 (or 19157300053 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 12203200121021 its reverse (12012100230221), we get a palindrome (24215300351242).

The spelling of 12203200121021 in words is "twelve trillion, two hundred three billion, two hundred million, one hundred twenty-one thousand, twenty-one".