1221220202219 has 8 divisors (see below), whose sum is σ = 1230087856560. Its totient is φ = 1212383285856.

The previous prime is 1221220202203. The next prime is 1221220202221. The reversal of 1221220202219 is 9122020221221.

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 1221220202219 - 2⁴ = 1221220202203 is a prime.

It is a super-2 number, since 2×1221220202219² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1221220202249) 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 in 7 ways as a sum of consecutive naturals, for example, 7604744 + ... + 7763669.

It is an arithmetic number, because the mean of its divisors is an integer number (153760982070).

Almost surely, 2^{1221220202219} is an apocalyptic number.

1221220202219 is a deficient number, since it is larger than the sum of its proper divisors (8867654341).

1221220202219 is a wasteful number, since it uses less digits than its factorization.

1221220202219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15368989.

The product of its (nonzero) digits is 1152, while the sum is 26.

The spelling of 1221220202219 in words is "one trillion, two hundred twenty-one billion, two hundred twenty million, two hundred two thousand, two hundred nineteen".