1212076669 has 2 divisors, whose sum is σ = 1212076670. Its totient is φ = 1212076668.

The previous prime is 1212076661. The next prime is 1212076703. The reversal of 1212076669 is 9666702121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 986776569 + 225300100 = 31413^2 + 15010^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212076669 - 2³ = 1212076661 is a prime.

It is a super-2 number, since 2×1212076669² = 2938259703068271122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212076661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606038334 + 606038335.

It is an arithmetic number, because the mean of its divisors is an integer number (606038335).

Almost surely, 2^1212076669 is an apocalyptic number.

It is an amenable number.

1212076669 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212076669 is an equidigital number, since it uses as much as digits as its factorization.

1212076669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 1212076669 is about 34814.8914833868. The cubic root of 1212076669 is about 1066.2115035347.

The spelling of 1212076669 in words is "one billion, two hundred twelve million, seventy-six thousand, six hundred sixty-nine".