1220221012099 has 2 divisors, whose sum is σ = 1220221012100. Its totient is φ = 1220221012098.

The previous prime is 1220221012097. The next prime is 1220221012117. The reversal of 1220221012099 is 9902101220221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1220221012099 - 2¹ = 1220221012097 is a prime.

Together with 1220221012097, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1220221012099.

It is not a weakly prime, because it can be changed into another prime (1220221012097) 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 as a sum of consecutive naturals, namely, 610110506049 + 610110506050.

It is an arithmetic number, because the mean of its divisors is an integer number (610110506050).

Almost surely, 2^{1220221012099} is an apocalyptic number.

1220221012099 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220221012099 is an equidigital number, since it uses as much as digits as its factorization.

1220221012099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 31.

The spelling of 1220221012099 in words is "one trillion, two hundred twenty billion, two hundred twenty-one million, twelve thousand, ninety-nine".