12221201012021 has 8 divisors (see below), whose sum is σ = 12457426023840. Its totient is φ = 11987094610512.

The previous prime is 12221201011949. The next prime is 12221201012029. The reversal of 12221201012021 is 12021010212221.

12221201012021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12221201012021 is a prime.

It is a super-2 number, since 2×12221201012021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221201012029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 529640930 + ... + 529664003.

It is an arithmetic number, because the mean of its divisors is an integer number (1557178252980).

Almost surely, 2^{12221201012021} is an apocalyptic number.

It is an amenable number.

12221201012021 is a deficient number, since it is larger than the sum of its proper divisors (236225011819).

12221201012021 is a wasteful number, since it uses less digits than its factorization.

12221201012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059305155.

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

Adding to 12221201012021 its reverse (12021010212221), we get a palindrome (24242211224242).

The spelling of 12221201012021 in words is "twelve trillion, two hundred twenty-one billion, two hundred one million, twelve thousand, twenty-one".