221055802867 has 2 divisors, whose sum is σ = 221055802868. Its totient is φ = 221055802866.

The previous prime is 221055802787. The next prime is 221055802921. The reversal of 221055802867 is 768208550122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221055802867 - 2¹⁹ = 221055278579 is a prime.

It is not a weakly prime, because it can be changed into another prime (221055802367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110527901433 + 110527901434.

It is an arithmetic number, because the mean of its divisors is an integer number (110527901434).

Almost surely, 2^221055802867 is an apocalyptic number.

221055802867 is a deficient number, since it is larger than the sum of its proper divisors (1).

221055802867 is an equidigital number, since it uses as much as digits as its factorization.

221055802867 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 537600, while the sum is 46.

The spelling of 221055802867 in words is "two hundred twenty-one billion, fifty-five million, eight hundred two thousand, eight hundred sixty-seven".