1220221001147 has 2 divisors, whose sum is σ = 1220221001148. Its totient is φ = 1220221001146.

The previous prime is 1220221001143. The next prime is 1220221001171. The reversal of 1220221001147 is 7411001220221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1220221001147 - 2² = 1220221001143 is a prime.

It is not a weakly prime, because it can be changed into another prime (1220221001141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610110500573 + 610110500574.

It is an arithmetic number, because the mean of its divisors is an integer number (610110500574).

Almost surely, 2^{1220221001147} is an apocalyptic number.

1220221001147 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220221001147 is an equidigital number, since it uses as much as digits as its factorization.

1220221001147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 23.

Adding to 1220221001147 its reverse (7411001220221), we get a palindrome (8631222221368).

The spelling of 1220221001147 in words is "one trillion, two hundred twenty billion, two hundred twenty-one million, one thousand, one hundred forty-seven".