12200221122021 has 48 divisors (see below), whose sum is σ = 18676816238080. Its totient is φ = 7652764980000.

The previous prime is 12200221121981. The next prime is 12200221122041. The reversal of 12200221122021 is 12022112200221.

It is a happy number.

12200221122021 is a `hidden beast` number, since 1 + 2 + 200 + 221 + 1 + 220 + 21 = 666.

It is not a de Polignac number, because 12200221122021 - 2³⁸ = 11925343215077 is a prime.

It is a super-2 number, since 2×12200221122021² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12200221121985 and 12200221122003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12200221122041) 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 47 ways as a sum of consecutive naturals, for example, 129341886 + ... + 129436176.

Almost surely, 2^{12200221122021} is an apocalyptic number.

It is an amenable number.

12200221122021 is a deficient number, since it is larger than the sum of its proper divisors (6476595116059).

12200221122021 is a wasteful number, since it uses less digits than its factorization.

12200221122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99478 (or 99475 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12200221122021 its reverse (12022112200221), we get a palindrome (24222333322242).

The spelling of 12200221122021 in words is "twelve trillion, two hundred billion, two hundred twenty-one million, one hundred twenty-two thousand, twenty-one".