12002020222221 has 24 divisors (see below), whose sum is σ = 17367232308504. Its totient is φ = 7987054584960.

The previous prime is 12002020222147. The next prime is 12002020222277. The reversal of 12002020222221 is 12222202020021.

12002020222221 is a `hidden beast` number, since 1 + 20 + 0 + 202 + 0 + 222 + 221 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1706354375625 + 10295665846596 = 1306275^2 + 3208686^2 .

It is not a de Polignac number, because 12002020222221 - 2²² = 12002016027917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12002020222194 and 12002020222203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12002020222121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21600135 + ... + 22148811.

It is an arithmetic number, because the mean of its divisors is an integer number (723634679521).

Almost surely, 2^{12002020222221} is an apocalyptic number.

It is an amenable number.

12002020222221 is a deficient number, since it is larger than the sum of its proper divisors (5365212086283).

12002020222221 is a wasteful number, since it uses less digits than its factorization.

12002020222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553021 (or 553018 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 12002020222221 its reverse (12222202020021), we get a palindrome (24224222242242).

The spelling of 12002020222221 in words is "twelve trillion, two billion, twenty million, two hundred twenty-two thousand, two hundred twenty-one".