10221100989 has 24 divisors (see below), whose sum is σ = 15328073376. Its totient is φ = 6050536800.

The previous prime is 10221100943. The next prime is 10221100991. The reversal of 10221100989 is 98900112201.

It is not a de Polignac number, because 10221100989 - 2²⁰ = 10220052413 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221100789) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 311802 + ... + 343019.

It is an arithmetic number, because the mean of its divisors is an integer number (638669724).

Almost surely, 2^10221100989 is an apocalyptic number.

It is an amenable number.

10221100989 is a deficient number, since it is larger than the sum of its proper divisors (5106972387).

10221100989 is a wasteful number, since it uses less digits than its factorization.

10221100989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654889 (or 654878 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 33.

It can be divided in two parts, 1022 and 1100989, that added together give a palindrome (1102011).

The spelling of 10221100989 in words is "ten billion, two hundred twenty-one million, one hundred thousand, nine hundred eighty-nine".