221220222202999 has 4 divisors (see below), whose sum is σ = 223705842677280. Its totient is φ = 218734601728720.

The previous prime is 221220222202907. The next prime is 221220222203021. The reversal of 221220222202999 is 999202222022122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 221220222202999 - 2¹¹ = 221220222200951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221220222206999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1242810237007 + ... + 1242810237184.

It is an arithmetic number, because the mean of its divisors is an integer number (55926460669320).

Almost surely, 2^{221220222202999} is an apocalyptic number.

221220222202999 is a deficient number, since it is larger than the sum of its proper divisors (2485620474281).

221220222202999 is an equidigital number, since it uses as much as digits as its factorization.

221220222202999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2485620474280.

The product of its (nonzero) digits is 373248, while the sum is 46.

The spelling of 221220222202999 in words is "two hundred twenty-one trillion, two hundred twenty billion, two hundred twenty-two million, two hundred two thousand, nine hundred ninety-nine".