1220211110947 has 2 divisors, whose sum is σ = 1220211110948. Its totient is φ = 1220211110946.

The previous prime is 1220211110929. The next prime is 1220211111017. The reversal of 1220211110947 is 7490111120221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1220211110947 - 2¹¹ = 1220211108899 is a prime.

It is not a weakly prime, because it can be changed into another prime (1220211110047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610105555473 + 610105555474.

It is an arithmetic number, because the mean of its divisors is an integer number (610105555474).

Almost surely, 2^{1220211110947} is an apocalyptic number.

1220211110947 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220211110947 is an equidigital number, since it uses as much as digits as its factorization.

1220211110947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 31.

The spelling of 1220211110947 in words is "one trillion, two hundred twenty billion, two hundred eleven million, one hundred ten thousand, nine hundred forty-seven".