1233121481 has 2 divisors, whose sum is σ = 1233121482. Its totient is φ = 1233121480.

The previous prime is 1233121411. The next prime is 1233121523. The reversal of 1233121481 is 1841213321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 718240000 + 514881481 = 26800^2 + 22691^2 .

It is a cyclic number.

It is not a de Polignac number, because 1233121481 - 2¹⁰ = 1233120457 is a prime.

It is a super-2 number, since 2×1233121481² = 3041177173807266722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1233121481.

It is not a weakly prime, because it can be changed into another prime (1233121411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 616560740 + 616560741.

It is an arithmetic number, because the mean of its divisors is an integer number (616560741).

Almost surely, 2^1233121481 is an apocalyptic number.

It is an amenable number.

1233121481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1233121481 is an equidigital number, since it uses as much as digits as its factorization.

1233121481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 26.

The square root of 1233121481 is about 35115.8294932641. The cubic root of 1233121481 is about 1072.3468681595.

The spelling of 1233121481 in words is "one billion, two hundred thirty-three million, one hundred twenty-one thousand, four hundred eighty-one".