12212010120021 has 4 divisors (see below), whose sum is σ = 16282680160032. Its totient is φ = 8141340080012.

The previous prime is 12212010120017. The next prime is 12212010120071. The reversal of 12212010120021 is 12002101021221.

12212010120021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12212010120021 - 2² = 12212010120017 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212010120071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2035335020001 + ... + 2035335020006.

It is an arithmetic number, because the mean of its divisors is an integer number (4070670040008).

Almost surely, 2^{12212010120021} is an apocalyptic number.

It is an amenable number.

12212010120021 is a deficient number, since it is larger than the sum of its proper divisors (4070670040011).

12212010120021 is an equidigital number, since it uses as much as digits as its factorization.

12212010120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4070670040010.

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

Adding to 12212010120021 its reverse (12002101021221), we get a palindrome (24214111141242).

The spelling of 12212010120021 in words is "twelve trillion, two hundred twelve billion, ten million, one hundred twenty thousand, twenty-one".