221012221021219 has 2 divisors, whose sum is σ = 221012221021220. Its totient is φ = 221012221021218.

The previous prime is 221012221021169. The next prime is 221012221021243. The reversal of 221012221021219 is 912120122210122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221012221021219 - 2¹⁹ = 221012220496931 is a prime.

It is a super-2 number, since 2×221012221021219² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (221012221021279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110506110510609 + 110506110510610.

It is an arithmetic number, because the mean of its divisors is an integer number (110506110510610).

Almost surely, 2^{221012221021219} is an apocalyptic number.

221012221021219 is a deficient number, since it is larger than the sum of its proper divisors (1).

221012221021219 is an equidigital number, since it uses as much as digits as its factorization.

221012221021219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 28.

The spelling of 221012221021219 in words is "two hundred twenty-one trillion, twelve billion, two hundred twenty-one million, twenty-one thousand, two hundred nineteen".