1220223302221 has 48 divisors (see below), whose sum is σ = 1538212032000. Its totient is φ = 947498983200.

The previous prime is 1220223302213. The next prime is 1220223302251. The reversal of 1220223302221 is 1222033220221.

It is not a de Polignac number, because 1220223302221 - 2³ = 1220223302213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1220223302192 and 1220223302201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220223302251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 349532286 + ... + 349535776.

It is an arithmetic number, because the mean of its divisors is an integer number (32046084000).

Almost surely, 2^{1220223302221} is an apocalyptic number.

1220223302221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1220223302221 is a deficient number, since it is larger than the sum of its proper divisors (317988729779).

1220223302221 is a wasteful number, since it uses less digits than its factorization.

1220223302221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4846 (or 4835 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 1220223302221 its reverse (1222033220221), we get a palindrome (2442256522442).

It can be divided in two parts, 122022 and 3302221, that added together give a palindrome (3424243).

The spelling of 1220223302221 in words is "one trillion, two hundred twenty billion, two hundred twenty-three million, three hundred two thousand, two hundred twenty-one".