221100212221019 has 2 divisors, whose sum is σ = 221100212221020. Its totient is φ = 221100212221018.

The previous prime is 221100212221001. The next prime is 221100212221111. The reversal of 221100212221019 is 910122212001122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221100212221019 - 2³² = 221095917253723 is a prime.

It is a super-2 number, since 2×221100212221019² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (221100212221619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110550106110509 + 110550106110510.

It is an arithmetic number, because the mean of its divisors is an integer number (110550106110510).

Almost surely, 2^{221100212221019} is an apocalyptic number.

221100212221019 is a deficient number, since it is larger than the sum of its proper divisors (1).

221100212221019 is an equidigital number, since it uses as much as digits as its factorization.

221100212221019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 26.

The spelling of 221100212221019 in words is "two hundred twenty-one trillion, one hundred billion, two hundred twelve million, two hundred twenty-one thousand, nineteen".