98611221001 has 2 divisors, whose sum is σ = 98611221002. Its totient is φ = 98611221000.

The previous prime is 98611220957. The next prime is 98611221041. The reversal of 98611221001 is 10012211689.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77869460601 + 20741760400 = 279051^2 + 144020^2 .

It is an emirp because it is prime and its reverse (10012211689) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-98611221001 is a prime.

It is not a weakly prime, because it can be changed into another prime (98611221041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49305610500 + 49305610501.

It is an arithmetic number, because the mean of its divisors is an integer number (49305610501).

Almost surely, 2^98611221001 is an apocalyptic number.

It is an amenable number.

98611221001 is a deficient number, since it is larger than the sum of its proper divisors (1).

98611221001 is an equidigital number, since it uses as much as digits as its factorization.

98611221001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 31.

The spelling of 98611221001 in words is "ninety-eight billion, six hundred eleven million, two hundred twenty-one thousand, one".