221000212121019 has 8 divisors (see below), whose sum is σ = 312000299465040. Its totient is φ = 138666799762176.

The previous prime is 221000212120999. The next prime is 221000212121057. The reversal of 221000212121019 is 910121212000122.

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

It is not a de Polignac number, because 221000212121019 - 2⁸ = 221000212120763 is a prime.

It is a super-2 number, since 2×221000212121019² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 221000212121019.

It is not an unprimeable number, because it can be changed into a prime (221000212121069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2166668746234 + ... + 2166668746335.

It is an arithmetic number, because the mean of its divisors is an integer number (39000037433130).

Almost surely, 2^{221000212121019} is an apocalyptic number.

221000212121019 is a deficient number, since it is larger than the sum of its proper divisors (91000087344021).

221000212121019 is a wasteful number, since it uses less digits than its factorization.

221000212121019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4333337492589.

The product of its (nonzero) digits is 288, while the sum is 24.

The spelling of 221000212121019 in words is "two hundred twenty-one trillion, two hundred twelve million, one hundred twenty-one thousand, nineteen".