12201022112021 has 4 divisors (see below), whose sum is σ = 12201086813472. Its totient is φ = 12200957410572.

The previous prime is 12201022111933. The next prime is 12201022112107. The reversal of 12201022112021 is 12021122010221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12201022112021 - 2³⁴ = 12183842242837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12201022132021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32067035 + ... + 32445288.

It is an arithmetic number, because the mean of its divisors is an integer number (3050271703368).

Almost surely, 2^{12201022112021} is an apocalyptic number.

It is an amenable number.

12201022112021 is a deficient number, since it is larger than the sum of its proper divisors (64701451).

12201022112021 is an equidigital number, since it uses as much as digits as its factorization.

12201022112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64701450.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12201022112021 its reverse (12021122010221), we get a palindrome (24222144122242).

It can be divided in two parts, 122010221 and 12021, that multiplied together give a palindrome (1466684866641).

The spelling of 12201022112021 in words is "twelve trillion, two hundred one billion, twenty-two million, one hundred twelve thousand, twenty-one".