21824301197 has 2 divisors, whose sum is σ = 21824301198. Its totient is φ = 21824301196.

The previous prime is 21824301173. The next prime is 21824301221. The reversal of 21824301197 is 79110342812.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (21824301173) and next prime (21824301221).

It can be written as a sum of positive squares in only one way, i.e., 21337613476 + 486687721 = 146074^2 + 22061^2 .

It is a cyclic number.

It is not a de Polignac number, because 21824301197 - 2¹⁶ = 21824235661 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21824301197.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21824301137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10912150598 + 10912150599.

It is an arithmetic number, because the mean of its divisors is an integer number (10912150599).

Almost surely, 2^21824301197 is an apocalyptic number.

It is an amenable number.

21824301197 is a deficient number, since it is larger than the sum of its proper divisors (1).

21824301197 is an equidigital number, since it uses as much as digits as its factorization.

21824301197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 38.

The spelling of 21824301197 in words is "twenty-one billion, eight hundred twenty-four million, three hundred one thousand, one hundred ninety-seven".