121220203219 has 2 divisors, whose sum is σ = 121220203220. Its totient is φ = 121220203218.

The previous prime is 121220203211. The next prime is 121220203277. The reversal of 121220203219 is 912302022121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121220203219 - 2³ = 121220203211 is a prime.

It is a super-2 number, since 2×121220203219² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121220203193 and 121220203202.

It is not a weakly prime, because it can be changed into another prime (121220203211) 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, 60610101609 + 60610101610.

It is an arithmetic number, because the mean of its divisors is an integer number (60610101610).

Almost surely, 2^121220203219 is an apocalyptic number.

121220203219 is a deficient number, since it is larger than the sum of its proper divisors (1).

121220203219 is an equidigital number, since it uses as much as digits as its factorization.

121220203219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The spelling of 121220203219 in words is "one hundred twenty-one billion, two hundred twenty million, two hundred three thousand, two hundred nineteen".