1200220010257 has 2 divisors, whose sum is σ = 1200220010258. Its totient is φ = 1200220010256.

The previous prime is 1200220010191. The next prime is 1200220010293. The reversal of 1200220010257 is 7520100220021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 949930926736 + 250289083521 = 974644^2 + 500289^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200220010257 - 2¹¹ = 1200220008209 is a prime.

It is a super-3 number, since 3×1200220010257³ (a number of 37 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1200220016257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600110005128 + 600110005129.

It is an arithmetic number, because the mean of its divisors is an integer number (600110005129).

Almost surely, 2^{1200220010257} is an apocalyptic number.

It is an amenable number.

1200220010257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200220010257 is an equidigital number, since it uses as much as digits as its factorization.

1200220010257 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 1200220010257 its reverse (7520100220021), we get a palindrome (8720320230278).

The spelling of 1200220010257 in words is "one trillion, two hundred billion, two hundred twenty million, ten thousand, two hundred fifty-seven".