12201112010021 has 4 divisors (see below), whose sum is σ = 13310304010944. Its totient is φ = 11091920009100.

The previous prime is 12201112009991. The next prime is 12201112010023. The reversal of 12201112010021 is 12001021110221.

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 12201112010021 - 2³⁴ = 12183932140837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12201112009978 and 12201112010005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12201112010023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 554596000445 + ... + 554596000466.

It is an arithmetic number, because the mean of its divisors is an integer number (3327576002736).

Almost surely, 2^{12201112010021} is an apocalyptic number.

12201112010021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12201112010021 is a deficient number, since it is larger than the sum of its proper divisors (1109192000923).

12201112010021 is a wasteful number, since it uses less digits than its factorization.

12201112010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109192000922.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12201112010021 its reverse (12001021110221), we get a palindrome (24202133120242).

The spelling of 12201112010021 in words is "twelve trillion, two hundred one billion, one hundred twelve million, ten thousand, twenty-one".