2043221102257 has 2 divisors, whose sum is σ = 2043221102258. Its totient is φ = 2043221102256.

The previous prime is 2043221102101. The next prime is 2043221102297. The reversal of 2043221102257 is 7522011223402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1701435880881 + 341785221376 = 1304391^2 + 584624^2 .

It is a cyclic number.

It is not a de Polignac number, because 2043221102257 - 2¹¹ = 2043221100209 is a prime.

It is not a weakly prime, because it can be changed into another prime (2043221102297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1021610551128 + 1021610551129.

It is an arithmetic number, because the mean of its divisors is an integer number (1021610551129).

Almost surely, 2^{2043221102257} is an apocalyptic number.

It is an amenable number.

2043221102257 is a deficient number, since it is larger than the sum of its proper divisors (1).

2043221102257 is an equidigital number, since it uses as much as digits as its factorization.

2043221102257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 31.

Adding to 2043221102257 its reverse (7522011223402), we get a palindrome (9565232325659).

The spelling of 2043221102257 in words is "two trillion, forty-three billion, two hundred twenty-one million, one hundred two thousand, two hundred fifty-seven".