12222112020021 has 12 divisors (see below), whose sum is σ = 17866862552448. Its totient is φ = 8049905105064.

The previous prime is 12222112020017. The next prime is 12222112020023. The reversal of 12222112020021 is 12002021122221.

It is a happy number.

12222112020021 is a `hidden beast` number, since 122 + 221 + 120 + 200 + 2 + 1 = 666.

It is not a de Polignac number, because 12222112020021 - 2² = 12222112020017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12222112019976 and 12222112020003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222112020023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8180797125 + ... + 8180798618.

It is an arithmetic number, because the mean of its divisors is an integer number (1488905212704).

Almost surely, 2^{12222112020021} is an apocalyptic number.

It is an amenable number.

12222112020021 is a deficient number, since it is larger than the sum of its proper divisors (5644750532427).

12222112020021 is a wasteful number, since it uses less digits than its factorization.

12222112020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16361595832 (or 16361595829 counting only the distinct ones).

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

Adding to 12222112020021 its reverse (12002021122221), we get a palindrome (24224133142242).

The spelling of 12222112020021 in words is "twelve trillion, two hundred twenty-two billion, one hundred twelve million, twenty thousand, twenty-one".