1220021222099 has 2 divisors, whose sum is σ = 1220021222100. Its totient is φ = 1220021222098.

The previous prime is 1220021222071. The next prime is 1220021222153. The reversal of 1220021222099 is 9902221200221.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220021222099 is a prime.

It is not a weakly prime, because it can be changed into another prime (1220021222059) 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 as a sum of consecutive naturals, namely, 610010611049 + 610010611050.

It is an arithmetic number, because the mean of its divisors is an integer number (610010611050).

Almost surely, 2^{1220021222099} is an apocalyptic number.

1220021222099 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220021222099 is an equidigital number, since it uses as much as digits as its factorization.

1220021222099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 32.

The spelling of 1220021222099 in words is "one trillion, two hundred twenty billion, twenty-one million, two hundred twenty-two thousand, ninety-nine".