1220011222101 has 24 divisors (see below), whose sum is σ = 1910667729600. Its totient is φ = 678307381632.

The previous prime is 1220011222081. The next prime is 1220011222127. The reversal of 1220011222101 is 1012221100221.

It is not a de Polignac number, because 1220011222101 - 2⁹ = 1220011221589 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220011222151) 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 23 ways as a sum of consecutive naturals, for example, 21189576 + ... + 21247073.

It is an arithmetic number, because the mean of its divisors is an integer number (79611155400).

Almost surely, 2^{1220011222101} is an apocalyptic number.

It is an amenable number.

1220011222101 is a deficient number, since it is larger than the sum of its proper divisors (690656507499).

1220011222101 is an equidigital number, since it uses as much as digits as its factorization.

1220011222101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42436733 (or 42436696 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1220011222101 its reverse (1012221100221), we get a palindrome (2232232322322).

The spelling of 1220011222101 in words is "one trillion, two hundred twenty billion, eleven million, two hundred twenty-two thousand, one hundred one".