1221000202219 has 8 divisors (see below), whose sum is σ = 1477512849888. Its totient is φ = 985008566400.

The previous prime is 1221000202211. The next prime is 1221000202249. The reversal of 1221000202219 is 9122020001221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1221000202219 - 2³ = 1221000202211 is a prime.

It is a super-2 number, since 2×1221000202219² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1221000202219.

It is not an unprimeable number, because it can be changed into a prime (1221000202211) 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 7 ways as a sum of consecutive naturals, for example, 5130252832 + ... + 5130253069.

It is an arithmetic number, because the mean of its divisors is an integer number (184689106236).

Almost surely, 2^{1221000202219} is an apocalyptic number.

1221000202219 is a deficient number, since it is larger than the sum of its proper divisors (256512647669).

1221000202219 is a wasteful number, since it uses less digits than its factorization.

1221000202219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10260505925.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 1221000202219 in words is "one trillion, two hundred twenty-one billion, two hundred two thousand, two hundred nineteen".