10001211989 has 8 divisors (see below), whose sum is σ = 10199347200. Its totient is φ = 9803426256.

The previous prime is 10001211973. The next prime is 10001212057. The reversal of 10001211989 is 98911210001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10001211989 - 2⁴ = 10001211973 is a prime.

It is a super-2 number, since 2×10001211989² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10001211929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29189 + ... + 144410.

It is an arithmetic number, because the mean of its divisors is an integer number (1274918400).

Almost surely, 2^10001211989 is an apocalyptic number.

It is an amenable number.

10001211989 is a deficient number, since it is larger than the sum of its proper divisors (198135211).

10001211989 is a wasteful number, since it uses less digits than its factorization.

10001211989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174739.

The product of its (nonzero) digits is 1296, while the sum is 32.

The spelling of 10001211989 in words is "ten billion, one million, two hundred eleven thousand, nine hundred eighty-nine".