221120977885351 has 2 divisors, whose sum is σ = 221120977885352. Its totient is φ = 221120977885350.

The previous prime is 221120977885289. The next prime is 221120977885421. The reversal of 221120977885351 is 153588779021122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221120977885351 - 2¹¹ = 221120977883303 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221120977885351.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221120977886351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110560488942675 + 110560488942676.

It is an arithmetic number, because the mean of its divisors is an integer number (110560488942676).

Almost surely, 2^{221120977885351} is an apocalyptic number.

221120977885351 is a deficient number, since it is larger than the sum of its proper divisors (1).

221120977885351 is an equidigital number, since it uses as much as digits as its factorization.

221120977885351 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16934400, while the sum is 61.

The spelling of 221120977885351 in words is "two hundred twenty-one trillion, one hundred twenty billion, nine hundred seventy-seven million, eight hundred eighty-five thousand, three hundred fifty-one".