98179797273221 has 2 divisors, whose sum is σ = 98179797273222. Its totient is φ = 98179797273220.

The previous prime is 98179797273193. The next prime is 98179797273269. The reversal of 98179797273221 is 12237279797189.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92969128202500 + 5210669070721 = 9642050^2 + 2282689^2 .

It is an emirp because it is prime and its reverse (12237279797189) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 98179797273221 - 2⁴⁶ = 27811053095557 is a prime.

It is a super-2 number, since 2×98179797273221² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98179797273121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49089898636610 + 49089898636611.

It is an arithmetic number, because the mean of its divisors is an integer number (49089898636611).

Almost surely, 2^{98179797273221} is an apocalyptic number.

It is an amenable number.

98179797273221 is a deficient number, since it is larger than the sum of its proper divisors (1).

98179797273221 is an equidigital number, since it uses as much as digits as its factorization.

98179797273221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 336063168, while the sum is 74.

The spelling of 98179797273221 in words is "ninety-eight trillion, one hundred seventy-nine billion, seven hundred ninety-seven million, two hundred seventy-three thousand, two hundred twenty-one".