12102201210021 has 16 divisors (see below), whose sum is σ = 17705397419136. Its totient is φ = 7306989408576.

The previous prime is 12102201209921. The next prime is 12102201210023. The reversal of 12102201210021 is 12001210220121.

It is not a de Polignac number, because 12102201210021 - 2¹¹ = 12102201207973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12102201210023) 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, 2927477665 + ... + 2927481798.

It is an arithmetic number, because the mean of its divisors is an integer number (1106587338696).

Almost surely, 2^{12102201210021} is an apocalyptic number.

It is an amenable number.

12102201210021 is a deficient number, since it is larger than the sum of its proper divisors (5603196209115).

12102201210021 is a wasteful number, since it uses less digits than its factorization.

12102201210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5854959532.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12102201210021 its reverse (12001210220121), we get a palindrome (24103411430142).

The spelling of 12102201210021 in words is "twelve trillion, one hundred two billion, two hundred one million, two hundred ten thousand, twenty-one".