221535202044047 has 2 divisors, whose sum is σ = 221535202044048. Its totient is φ = 221535202044046.

The previous prime is 221535202044041. The next prime is 221535202044089. The reversal of 221535202044047 is 740440202535122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221535202044047 - 2²⁸ = 221534933608591 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221535202043995 and 221535202044013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221535202044041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110767601022023 + 110767601022024.

It is an arithmetic number, because the mean of its divisors is an integer number (110767601022024).

Almost surely, 2^{221535202044047} is an apocalyptic number.

221535202044047 is a deficient number, since it is larger than the sum of its proper divisors (1).

221535202044047 is an equidigital number, since it uses as much as digits as its factorization.

221535202044047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 537600, while the sum is 41.

Adding to 221535202044047 its reverse (740440202535122), we get a palindrome (961975404579169).

The spelling of 221535202044047 in words is "two hundred twenty-one trillion, five hundred thirty-five billion, two hundred two million, forty-four thousand, forty-seven".