232121111081 has 2 divisors, whose sum is σ = 232121111082. Its totient is φ = 232121111080.

The previous prime is 232121111063. The next prime is 232121111113. The reversal of 232121111081 is 180111121232.

It is a happy number.

232121111081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 225834048400 + 6287062681 = 475220^2 + 79291^2 .

It is a cyclic number.

It is not a de Polignac number, because 232121111081 - 2²⁶ = 232054002217 is a prime.

It is a super-3 number, since 3×232121111081³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (232121111041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116060555540 + 116060555541.

It is an arithmetic number, because the mean of its divisors is an integer number (116060555541).

Almost surely, 2^232121111081 is an apocalyptic number.

It is an amenable number.

232121111081 is a deficient number, since it is larger than the sum of its proper divisors (1).

232121111081 is an equidigital number, since it uses as much as digits as its factorization.

232121111081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 23.

The spelling of 232121111081 in words is "two hundred thirty-two billion, one hundred twenty-one million, one hundred eleven thousand, eighty-one".