12212202201021 has 32 divisors (see below), whose sum is σ = 18178231488000. Its totient is φ = 8102771034624.

The previous prime is 12212202200993. The next prime is 12212202201041. The reversal of 12212202201021 is 12010220221221.

It is a happy number.

12212202201021 is a `hidden beast` number, since 1 + 221 + 220 + 2 + 201 + 0 + 21 = 666.

It is not a de Polignac number, because 12212202201021 - 2⁹ = 12212202200509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12212202200985 and 12212202201003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212202201041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10772325 + ... + 11851893.

It is an arithmetic number, because the mean of its divisors is an integer number (568069734000).

Almost surely, 2^{12212202201021} is an apocalyptic number.

It is an amenable number.

12212202201021 is a deficient number, since it is larger than the sum of its proper divisors (5966029286979).

12212202201021 is a wasteful number, since it uses less digits than its factorization.

12212202201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1081570 (or 1081564 counting only the distinct ones).

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

Adding to 12212202201021 its reverse (12010220221221), we get a palindrome (24222422422242).

The spelling of 12212202201021 in words is "twelve trillion, two hundred twelve billion, two hundred two million, two hundred one thousand, twenty-one".