2200200001221 has 4 divisors (see below), whose sum is σ = 2933600001632. Its totient is φ = 1466800000812.

The previous prime is 2200200001199. The next prime is 2200200001261. The reversal of 2200200001221 is 1221000020022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2200200001221 - 2¹³ = 2200199993029 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2200200001197 and 2200200001206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2200200001261) 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, 366700000201 + ... + 366700000206.

It is an arithmetic number, because the mean of its divisors is an integer number (733400000408).

Almost surely, 2^{2200200001221} is an apocalyptic number.

It is an amenable number.

2200200001221 is a deficient number, since it is larger than the sum of its proper divisors (733400000411).

2200200001221 is an equidigital number, since it uses as much as digits as its factorization.

2200200001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733400000410.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 2200200001221 its reverse (1221000020022), we get a palindrome (3421200021243).

The spelling of 2200200001221 in words is "two trillion, two hundred billion, two hundred million, one thousand, two hundred twenty-one".