1001211098 has 4 divisors (see below), whose sum is σ = 1501816650. Its totient is φ = 500605548.

The previous prime is 1001211089. The next prime is 1001211121. The reversal of 1001211098 is 8901121001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 596678329 + 404532769 = 24427^2 + 20113^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250302773 + ... + 250302776.

Almost surely, 2^1001211098 is an apocalyptic number.

1001211098 is a deficient number, since it is larger than the sum of its proper divisors (500605552).

1001211098 is an equidigital number, since it uses as much as digits as its factorization.

1001211098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500605551.

The product of its (nonzero) digits is 144, while the sum is 23.

The square root of 1001211098 is about 31641.9199480689. The cubic root of 1001211098 is about 1000.4035364697.

Adding to 1001211098 its reverse (8901121001), we get a palindrome (9902332099).

The spelling of 1001211098 in words is "one billion, one million, two hundred eleven thousand, ninety-eight".