221000122022021 has 8 divisors (see below), whose sum is σ = 225208711563264. Its totient is φ = 216792968626000.

The previous prime is 221000122022003. The next prime is 221000122022051. The reversal of 221000122022021 is 120220221000122.

It is a happy number.

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 221000122022021 - 2⁶ = 221000122021957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221000122022051) 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, 358725605 + ... + 359341146.

It is an arithmetic number, because the mean of its divisors is an integer number (28151088945408).

Almost surely, 2^{221000122022021} is an apocalyptic number.

It is an amenable number.

221000122022021 is a deficient number, since it is larger than the sum of its proper divisors (4208589541243).

221000122022021 is an equidigital number, since it uses as much as digits as its factorization.

221000122022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718072611.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 221000122022021 its reverse (120220221000122), we get a palindrome (341220343022143).

The spelling of 221000122022021 in words is "two hundred twenty-one trillion, one hundred twenty-two million, twenty-two thousand, twenty-one".