201221220019 has 8 divisors (see below), whose sum is σ = 201679783200. Its totient is φ = 200763066816.

The previous prime is 201221219989. The next prime is 201221220047. The reversal of 201221220019 is 910022122102.

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 201221220019 - 2¹¹ = 201221217971 is a prime.

It is a super-2 number, since 2×201221220019² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201221220059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 891177 + ... + 1093909.

It is an arithmetic number, because the mean of its divisors is an integer number (25209972900).

Almost surely, 2^201221220019 is an apocalyptic number.

201221220019 is a deficient number, since it is larger than the sum of its proper divisors (458563181).

201221220019 is a wasteful number, since it uses less digits than its factorization.

201221220019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204989.

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

The spelling of 201221220019 in words is "two hundred one billion, two hundred twenty-one million, two hundred twenty thousand, nineteen".