12200222212021 has 4 divisors (see below), whose sum is σ = 12220124695852. Its totient is φ = 12180319728192.

The previous prime is 12200222212001. The next prime is 12200222212039. The reversal of 12200222212021 is 12021222200221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 541753409521 + 11658468802500 = 736039^2 + 3414450^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12200222212021 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 12200222212021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12200222212001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9951240996 + ... + 9951242221.

It is an arithmetic number, because the mean of its divisors is an integer number (3055031173963).

Almost surely, 2^{12200222212021} is an apocalyptic number.

It is an amenable number.

12200222212021 is a deficient number, since it is larger than the sum of its proper divisors (19902483831).

12200222212021 is an equidigital number, since it uses as much as digits as its factorization.

12200222212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19902483830.

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

Adding to 12200222212021 its reverse (12021222200221), we get a palindrome (24221444412242).

The spelling of 12200222212021 in words is "twelve trillion, two hundred billion, two hundred twenty-two million, two hundred twelve thousand, twenty-one".