221221100120019 has 16 divisors (see below), whose sum is σ = 297566679455232. Its totient is φ = 146182978520928.

The previous prime is 221221100119933. The next prime is 221221100120063. The reversal of 221221100120019 is 910021001122122.

It is not a de Polignac number, because 221221100120019 - 2⁹ = 221221100119507 is a prime.

It is a super-2 number, since 2×221221100120019² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221221100120099) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 606245067 + ... + 606609860.

It is an arithmetic number, because the mean of its divisors is an integer number (18597917465952).

Almost surely, 2^{221221100120019} is an apocalyptic number.

221221100120019 is a deficient number, since it is larger than the sum of its proper divisors (76345579335213).

221221100120019 is a wasteful number, since it uses less digits than its factorization.

221221100120019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1212855466.

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

The spelling of 221221100120019 in words is "two hundred twenty-one trillion, two hundred twenty-one billion, one hundred million, one hundred twenty thousand, nineteen".