1098289221571 has 2 divisors, whose sum is σ = 1098289221572. Its totient is φ = 1098289221570.

The previous prime is 1098289221551. The next prime is 1098289221581. The reversal of 1098289221571 is 1751229828901.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1098289221571 - 2⁵ = 1098289221539 is a prime.

It is not a weakly prime, because it can be changed into another prime (1098289221521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549144610785 + 549144610786.

It is an arithmetic number, because the mean of its divisors is an integer number (549144610786).

Almost surely, 2^{1098289221571} is an apocalyptic number.

1098289221571 is a deficient number, since it is larger than the sum of its proper divisors (1).

1098289221571 is an equidigital number, since it uses as much as digits as its factorization.

1098289221571 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1451520, while the sum is 55.

The spelling of 1098289221571 in words is "one trillion, ninety-eight billion, two hundred eighty-nine million, two hundred twenty-one thousand, five hundred seventy-one".