1200221020057 has 2 divisors, whose sum is σ = 1200221020058. Its totient is φ = 1200221020056.

The previous prime is 1200221020021. The next prime is 1200221020067. The reversal of 1200221020057 is 7500201220021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1198278326281 + 1942693776 = 1094659^2 + 44076^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200221020057 - 2⁷ = 1200221019929 is a prime.

It is not a weakly prime, because it can be changed into another prime (1200221020067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600110510028 + 600110510029.

It is an arithmetic number, because the mean of its divisors is an integer number (600110510029).

Almost surely, 2^{1200221020057} is an apocalyptic number.

It is an amenable number.

1200221020057 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200221020057 is an equidigital number, since it uses as much as digits as its factorization.

1200221020057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 560, while the sum is 22.

Adding to 1200221020057 its reverse (7500201220021), we get a palindrome (8700422240078).

The spelling of 1200221020057 in words is "one trillion, two hundred billion, two hundred twenty-one million, twenty thousand, fifty-seven".