12212200222021 has 8 divisors (see below), whose sum is σ = 12265685221400. Its totient is φ = 12158716584960.

The previous prime is 12212200221971. The next prime is 12212200222039. The reversal of 12212200222021 is 12022200221221.

It can be written as a sum of positive squares in 4 ways, for example, as 7423521448996 + 4788678773025 = 2724614^2 + 2188305^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12212200222021 - 2²¹ = 12212198124869 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12212200222021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212200222421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20380861 + ... + 20971501.

It is an arithmetic number, because the mean of its divisors is an integer number (1533210652675).

Almost surely, 2^{12212200222021} is an apocalyptic number.

It is an amenable number.

12212200222021 is a deficient number, since it is larger than the sum of its proper divisors (53484999379).

12212200222021 is an equidigital number, since it uses as much as digits as its factorization.

12212200222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681159.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 12212200222021 its reverse (12022200221221), we get a palindrome (24234400443242).

The spelling of 12212200222021 in words is "twelve trillion, two hundred twelve billion, two hundred million, two hundred twenty-two thousand, twenty-one".