611221220047 has 2 divisors, whose sum is σ = 611221220048. Its totient is φ = 611221220046.

The previous prime is 611221220017. The next prime is 611221220083. The reversal of 611221220047 is 740022122116.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 611221220047 - 2¹⁹ = 611220695759 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 611221219997 and 611221220024.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (611221220017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305610610023 + 305610610024.

It is an arithmetic number, because the mean of its divisors is an integer number (305610610024).

Almost surely, 2^611221220047 is an apocalyptic number.

611221220047 is a deficient number, since it is larger than the sum of its proper divisors (1).

611221220047 is an equidigital number, since it uses as much as digits as its factorization.

611221220047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 28.

The spelling of 611221220047 in words is "six hundred eleven billion, two hundred twenty-one million, two hundred twenty thousand, forty-seven".