2202021012221 has 4 divisors (see below), whose sum is σ = 2229894696000. Its totient is φ = 2174147328444.

The previous prime is 2202021012167. The next prime is 2202021012223. The reversal of 2202021012221 is 1222101202022.

It is a happy number.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2202021012221 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 2202021012221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2202021012223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13936841771 + ... + 13936841928.

It is an arithmetic number, because the mean of its divisors is an integer number (557473674000).

Almost surely, 2^{2202021012221} is an apocalyptic number.

It is an amenable number.

2202021012221 is a deficient number, since it is larger than the sum of its proper divisors (27873683779).

2202021012221 is an equidigital number, since it uses as much as digits as its factorization.

2202021012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27873683778.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2202021012221 its reverse (1222101202022), we get a palindrome (3424122214243).

The spelling of 2202021012221 in words is "two trillion, two hundred two billion, twenty-one million, twelve thousand, two hundred twenty-one".