1222200002221 has 8 divisors (see below), whose sum is σ = 1346510174688. Its totient is φ = 1100090010000.

The previous prime is 1222200002207. The next prime is 1222200002291. The reversal of 1222200002221 is 1222000022221.

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 1222200002221 - 2²⁹ = 1221663131309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1222200002195 and 1222200002204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222200002291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 550043895 + ... + 550046116.

It is an arithmetic number, because the mean of its divisors is an integer number (168313771836).

Almost surely, 2^{1222200002221} is an apocalyptic number.

1222200002221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1222200002221 is a deficient number, since it is larger than the sum of its proper divisors (124310172467).

1222200002221 is a wasteful number, since it uses less digits than its factorization.

1222200002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100090123.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 1222200002221 its reverse (1222000022221), we get a palindrome (2444200024442).

It can be divided in two parts, 122220000 and 2221, that added together give a palindrome (122222221).

The spelling of 1222200002221 in words is "one trillion, two hundred twenty-two billion, two hundred million, two thousand, two hundred twenty-one".