1220221110043 has 16 divisors (see below), whose sum is σ = 1381083298560. Its totient is φ = 1069634849184.

The previous prime is 1220221110041. The next prime is 1220221110139. The reversal of 1220221110043 is 3400111220221.

It is not a de Polignac number, because 1220221110043 - 2¹ = 1220221110041 is a prime.

It is a super-2 number, since 2×1220221110043² (a number of 25 digits) contains 22 as substring.

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 1220221110043.

It is not an unprimeable number, because it can be changed into a prime (1220221110041) 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 15 ways as a sum of consecutive naturals, for example, 14638321 + ... + 14721442.

It is an arithmetic number, because the mean of its divisors is an integer number (86317706160).

Almost surely, 2^{1220221110043} is an apocalyptic number.

1220221110043 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1220221110043 is a deficient number, since it is larger than the sum of its proper divisors (160862188517).

1220221110043 is a wasteful number, since it uses less digits than its factorization.

1220221110043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29359938.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 1220221110043 its reverse (3400111220221), we get a palindrome (4620332330264).

The spelling of 1220221110043 in words is "one trillion, two hundred twenty billion, two hundred twenty-one million, one hundred ten thousand, forty-three".