1212654451 has 2 divisors, whose sum is σ = 1212654452. Its totient is φ = 1212654450.

The previous prime is 1212654449. The next prime is 1212654479. The reversal of 1212654451 is 1544562121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1212654451 - 2¹ = 1212654449 is a prime.

It is a super-2 number, since 2×1212654451² = 2941061635060222802, which contains 22 as substring.

Together with 1212654449, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1212654431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606327225 + 606327226.

It is an arithmetic number, because the mean of its divisors is an integer number (606327226).

Almost surely, 2^1212654451 is an apocalyptic number.

1212654451 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212654451 is an equidigital number, since it uses as much as digits as its factorization.

1212654451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9600, while the sum is 31.

The square root of 1212654451 is about 34823.1884094492. The cubic root of 1212654451 is about 1066.3808932471.

The spelling of 1212654451 in words is "one billion, two hundred twelve million, six hundred fifty-four thousand, four hundred fifty-one".