1202221440457 has 2 divisors, whose sum is σ = 1202221440458. Its totient is φ = 1202221440456.

The previous prime is 1202221440349. The next prime is 1202221440491. The reversal of 1202221440457 is 7540441222021.

It is an a-pointer prime, because the next prime (1202221440491) can be obtained adding 1202221440457 to its sum of digits (34).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 683037784521 + 519183655936 = 826461^2 + 720544^2 .

It is an emirp because it is prime and its reverse (7540441222021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1202221440457 - 2²³ = 1202213051849 is a prime.

It is not a weakly prime, because it can be changed into another prime (1202221446457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601110720228 + 601110720229.

It is an arithmetic number, because the mean of its divisors is an integer number (601110720229).

Almost surely, 2^{1202221440457} is an apocalyptic number.

It is an amenable number.

1202221440457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202221440457 is an equidigital number, since it uses as much as digits as its factorization.

1202221440457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35840, while the sum is 34.

Adding to 1202221440457 its reverse (7540441222021), we get a palindrome (8742662662478).

The spelling of 1202221440457 in words is "one trillion, two hundred two billion, two hundred twenty-one million, four hundred forty thousand, four hundred fifty-seven".