10233203111981 has 2 divisors, whose sum is σ = 10233203111982. Its totient is φ = 10233203111980.

The previous prime is 10233203111969. The next prime is 10233203112007. The reversal of 10233203111981 is 18911130233201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5287654260100 + 4945548851881 = 2299490^2 + 2223859^2 .

It is a cyclic number.

It is not a de Polignac number, because 10233203111981 - 2¹⁴ = 10233203095597 is a prime.

It is a super-2 number, since 2×10233203111981² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10233203111381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5116601555990 + 5116601555991.

It is an arithmetic number, because the mean of its divisors is an integer number (5116601555991).

Almost surely, 2^{10233203111981} is an apocalyptic number.

It is an amenable number.

10233203111981 is a deficient number, since it is larger than the sum of its proper divisors (1).

10233203111981 is an equidigital number, since it uses as much as digits as its factorization.

10233203111981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 35.

The spelling of 10233203111981 in words is "ten trillion, two hundred thirty-three billion, two hundred three million, one hundred eleven thousand, nine hundred eighty-one".