221976984323 has 2 divisors, whose sum is σ = 221976984324. Its totient is φ = 221976984322.

The previous prime is 221976984293. The next prime is 221976984337. The reversal of 221976984323 is 323489679122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221976984323 - 2¹⁴ = 221976967939 is a prime.

It is not a weakly prime, because it can be changed into another prime (221976984023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110988492161 + 110988492162.

It is an arithmetic number, because the mean of its divisors is an integer number (110988492162).

Almost surely, 2^221976984323 is an apocalyptic number.

221976984323 is a deficient number, since it is larger than the sum of its proper divisors (1).

221976984323 is an equidigital number, since it uses as much as digits as its factorization.

221976984323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7838208, while the sum is 56.

The spelling of 221976984323 in words is "two hundred twenty-one billion, nine hundred seventy-six million, nine hundred eighty-four thousand, three hundred twenty-three".