221332203323381 has 2 divisors, whose sum is σ = 221332203323382. Its totient is φ = 221332203323380.

The previous prime is 221332203323339. The next prime is 221332203323431. The reversal of 221332203323381 is 183323302233122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 217077760806481 + 4254442516900 = 14733559^2 + 2062630^2 .

It is a cyclic number.

It is not a de Polignac number, because 221332203323381 - 2²⁶ = 221332136214517 is a prime.

It is a super-2 number, since 2×221332203323381² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221332203323681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110666101661690 + 110666101661691.

It is an arithmetic number, because the mean of its divisors is an integer number (110666101661691).

Almost surely, 2^{221332203323381} is an apocalyptic number.

It is an amenable number.

221332203323381 is a deficient number, since it is larger than the sum of its proper divisors (1).

221332203323381 is an equidigital number, since it uses as much as digits as its factorization.

221332203323381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 38.

The spelling of 221332203323381 in words is "two hundred twenty-one trillion, three hundred thirty-two billion, two hundred three million, three hundred twenty-three thousand, three hundred eighty-one".