1212124481 has 2 divisors, whose sum is σ = 1212124482. Its totient is φ = 1212124480.

The previous prime is 1212124439. The next prime is 1212124489. The reversal of 1212124481 is 1844212121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1096669456 + 115455025 = 33116^2 + 10745^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212124481 - 2²² = 1207930177 is a prime.

It is a super-2 number, since 2×1212124481² = 2938491514879038722, 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 1212124481.

It is not a weakly prime, because it can be changed into another prime (1212124489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606062240 + 606062241.

It is an arithmetic number, because the mean of its divisors is an integer number (606062241).

Almost surely, 2^1212124481 is an apocalyptic number.

It is an amenable number.

1212124481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212124481 is an equidigital number, since it uses as much as digits as its factorization.

1212124481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1024, while the sum is 26.

The square root of 1212124481 is about 34815.5781368054. The cubic root of 1212124481 is about 1066.2255227343.

The spelling of 1212124481 in words is "one billion, two hundred twelve million, one hundred twenty-four thousand, four hundred eighty-one".