221872672503353 has 2 divisors, whose sum is σ = 221872672503354. Its totient is φ = 221872672503352.

The previous prime is 221872672503269. The next prime is 221872672503523. The reversal of 221872672503353 is 353305276278122.

221872672503353 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 221812976331769 + 59696171584 = 14893387^2 + 244328^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221872672503353 is a prime.

It is not a weakly prime, because it can be changed into another prime (221872672203353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110936336251676 + 110936336251677.

It is an arithmetic number, because the mean of its divisors is an integer number (110936336251677).

Almost surely, 2^{221872672503353} is an apocalyptic number.

It is an amenable number.

221872672503353 is a deficient number, since it is larger than the sum of its proper divisors (1).

221872672503353 is an equidigital number, since it uses as much as digits as its factorization.

221872672503353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25401600, while the sum is 56.

The spelling of 221872672503353 in words is "two hundred twenty-one trillion, eight hundred seventy-two billion, six hundred seventy-two million, five hundred three thousand, three hundred fifty-three".