232197908821 has 2 divisors, whose sum is σ = 232197908822. Its totient is φ = 232197908820.

The previous prime is 232197908797. The next prime is 232197908827. The reversal of 232197908821 is 128809791232.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 227634906321 + 4563002500 = 477111^2 + 67550^2 .

It is a cyclic number.

It is not a de Polignac number, because 232197908821 - 2⁷ = 232197908693 is a prime.

It is a super-2 number, since 2×232197908821² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (232197908827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116098954410 + 116098954411.

It is an arithmetic number, because the mean of its divisors is an integer number (116098954411).

Almost surely, 2^232197908821 is an apocalyptic number.

It is an amenable number.

232197908821 is a deficient number, since it is larger than the sum of its proper divisors (1).

232197908821 is an equidigital number, since it uses as much as digits as its factorization.

232197908821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 870912, while the sum is 52.

The spelling of 232197908821 in words is "two hundred thirty-two billion, one hundred ninety-seven million, nine hundred eight thousand, eight hundred twenty-one".