1212310081 has 2 divisors, whose sum is σ = 1212310082. Its totient is φ = 1212310080.

The previous prime is 1212310049. The next prime is 1212310093. The reversal of 1212310081 is 1800132121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 632271025 + 580039056 = 25145^2 + 24084^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212310081 - 2⁵ = 1212310049 is a prime.

It is a super-2 number, since 2×1212310081² = 2939391464988453122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1212311081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606155040 + 606155041.

It is an arithmetic number, because the mean of its divisors is an integer number (606155041).

Almost surely, 2^1212310081 is an apocalyptic number.

It is an amenable number.

1212310081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212310081 is an equidigital number, since it uses as much as digits as its factorization.

1212310081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 19.

The square root of 1212310081 is about 34818.2435082530. The cubic root of 1212310081 is about 1066.2799399608.

The spelling of 1212310081 in words is "one billion, two hundred twelve million, three hundred ten thousand, eighty-one".