221614145530501 has 2 divisors, whose sum is σ = 221614145530502. Its totient is φ = 221614145530500.

The previous prime is 221614145530499. The next prime is 221614145530573. The reversal of 221614145530501 is 105035541416122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132105024753025 + 89509120777476 = 11493695^2 + 9460926^2 .

It is a cyclic number.

It is not a de Polignac number, because 221614145530501 - 2¹ = 221614145530499 is a prime.

It is a super-2 number, since 2×221614145530501² (a number of 29 digits) contains 22 as substring.

Together with 221614145530499, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221614145534501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110807072765250 + 110807072765251.

It is an arithmetic number, because the mean of its divisors is an integer number (110807072765251).

Almost surely, 2^{221614145530501} is an apocalyptic number.

It is an amenable number.

221614145530501 is a deficient number, since it is larger than the sum of its proper divisors (1).

221614145530501 is an equidigital number, since it uses as much as digits as its factorization.

221614145530501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144000, while the sum is 40.

Adding to 221614145530501 its reverse (105035541416122), we get a palindrome (326649686946623).

The spelling of 221614145530501 in words is "two hundred twenty-one trillion, six hundred fourteen billion, one hundred forty-five million, five hundred thirty thousand, five hundred one".