221202022021109 has 4 divisors (see below), whose sum is σ = 221729950475040. Its totient is φ = 220674093567180.

The previous prime is 221202022021067. The next prime is 221202022021129. The reversal of 221202022021109 is 901120220202122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 221202022021109 - 2¹⁶ = 221202021955573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221202022021129) 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 3 ways as a sum of consecutive naturals, for example, 263964226337 + ... + 263964227174.

It is an arithmetic number, because the mean of its divisors is an integer number (55432487618760).

Almost surely, 2^{221202022021109} is an apocalyptic number.

It is an amenable number.

221202022021109 is a deficient number, since it is larger than the sum of its proper divisors (527928453931).

221202022021109 is an equidigital number, since it uses as much as digits as its factorization.

221202022021109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527928453930.

The product of its (nonzero) digits is 1152, while the sum is 26.

The spelling of 221202022021109 in words is "two hundred twenty-one trillion, two hundred two billion, twenty-two million, twenty-one thousand, one hundred nine".