1626122244421 has 2 divisors, whose sum is σ = 1626122244422. Its totient is φ = 1626122244420.

The previous prime is 1626122244361. The next prime is 1626122244443. The reversal of 1626122244421 is 1244422216261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1440266412321 + 185855832100 = 1200111^2 + 431110^2 .

It is a cyclic number.

It is not a de Polignac number, because 1626122244421 - 2⁹ = 1626122243909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1626122244821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 813061122210 + 813061122211.

It is an arithmetic number, because the mean of its divisors is an integer number (813061122211).

Almost surely, 2^{1626122244421} is an apocalyptic number.

It is an amenable number.

1626122244421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1626122244421 is an equidigital number, since it uses as much as digits as its factorization.

1626122244421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 73728, while the sum is 37.

The spelling of 1626122244421 in words is "one trillion, six hundred twenty-six billion, one hundred twenty-two million, two hundred forty-four thousand, four hundred twenty-one".