12221112010021 has 16 divisors (see below), whose sum is σ = 12575746580544. Its totient is φ = 11871305881344.

The previous prime is 12221112009983. The next prime is 12221112010027. The reversal of 12221112010021 is 12001021112221.

It is a cyclic number.

It is not a de Polignac number, because 12221112010021 - 2⁷ = 12221112009893 is a prime.

It is a super-2 number, since 2×12221112010021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12221112009977 and 12221112010004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221112010027) 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, 4307110 + ... + 6556936.

It is an arithmetic number, because the mean of its divisors is an integer number (785984161284).

Almost surely, 2^{12221112010021} is an apocalyptic number.

It is an amenable number.

12221112010021 is a deficient number, since it is larger than the sum of its proper divisors (354634570523).

12221112010021 is a wasteful number, since it uses less digits than its factorization.

12221112010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2250900.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12221112010021 its reverse (12001021112221), we get a palindrome (24222133122242).

The spelling of 12221112010021 in words is "twelve trillion, two hundred twenty-one billion, one hundred twelve million, ten thousand, twenty-one".