30232012211981 has 2 divisors, whose sum is σ = 30232012211982. Its totient is φ = 30232012211980.

The previous prime is 30232012211957. The next prime is 30232012212007. The reversal of 30232012211981 is 18911221023203.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15712178171881 + 14519834040100 = 3963859^2 + 3810490^2 .

It is a cyclic number.

It is not a de Polignac number, because 30232012211981 - 2¹⁰ = 30232012210957 is a prime.

It is a super-3 number, since 3×30232012211981³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30232012811981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15116006105990 + 15116006105991.

It is an arithmetic number, because the mean of its divisors is an integer number (15116006105991).

Almost surely, 2^{30232012211981} is an apocalyptic number.

It is an amenable number.

30232012211981 is a deficient number, since it is larger than the sum of its proper divisors (1).

30232012211981 is an equidigital number, since it uses as much as digits as its factorization.

30232012211981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 35.

The spelling of 30232012211981 in words is "thirty trillion, two hundred thirty-two billion, twelve million, two hundred eleven thousand, nine hundred eighty-one".