1222056445451 has 2 divisors, whose sum is σ = 1222056445452. Its totient is φ = 1222056445450.

The previous prime is 1222056445331. The next prime is 1222056445513. The reversal of 1222056445451 is 1545446502221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1222056445451 - 2²⁶ = 1221989336587 is a prime.

It is a super-4 number, since 4×1222056445451⁴ (a number of 49 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 1222056445399 and 1222056445408.

It is not a weakly prime, because it can be changed into another prime (1222056445651) 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, 611028222725 + 611028222726.

It is an arithmetic number, because the mean of its divisors is an integer number (611028222726).

Almost surely, 2^{1222056445451} is an apocalyptic number.

1222056445451 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222056445451 is an equidigital number, since it uses as much as digits as its factorization.

1222056445451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384000, while the sum is 41.

It can be divided in two parts, 122205 and 6445451, that added together give a palindrome (6567656).

The spelling of 1222056445451 in words is "one trillion, two hundred twenty-two billion, fifty-six million, four hundred forty-five thousand, four hundred fifty-one".