1211008898 has 18 divisors (see below), whose sum is σ = 1997556393. Its totient is φ = 550212520.

The previous prime is 1211008891. The next prime is 1211008913. The reversal of 1211008898 is 8988001121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1094087929 + 116920969 = 33077^2 + 10813^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=24607.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1211008891) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 540236 + ... + 542472.

Almost surely, 2^1211008898 is an apocalyptic number.

1211008898 is a deficient number, since it is larger than the sum of its proper divisors (786547495).

1211008898 is an frugal number, since it uses more digits than its factorization.

1211008898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4498 (or 2250 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 38.

The square root of 1211008898 is about 34799.5531293147. The cubic root of 1211008898 is about 1065.8983208719.

The spelling of 1211008898 in words is "one billion, two hundred eleven million, eight thousand, eight hundred ninety-eight".