1120000001221 has 32 divisors (see below), whose sum is σ = 1249438798080. Its totient is φ = 998521261056.

The previous prime is 1120000001203. The next prime is 1120000001273. The reversal of 1120000001221 is 1221000000211.

It is not a de Polignac number, because 1120000001221 - 2⁵ = 1120000001189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1120000001198 and 1120000001207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1120000001821) 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 31 ways as a sum of consecutive naturals, for example, 100021195 + ... + 100032391.

It is an arithmetic number, because the mean of its divisors is an integer number (39044962440).

Almost surely, 2^{1120000001221} is an apocalyptic number.

It is an amenable number.

1120000001221 is a deficient number, since it is larger than the sum of its proper divisors (129438796859).

1120000001221 is a wasteful number, since it uses less digits than its factorization.

1120000001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13693.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1120000001221 its reverse (1221000000211), we get a palindrome (2341000001432).

The spelling of 1120000001221 in words is "one trillion, one hundred twenty billion, one thousand, two hundred twenty-one".