109101021 has 8 divisors (see below), whose sum is σ = 153124320. Its totient is φ = 68905872.

The previous prime is 109101017. The next prime is 109101067. The reversal of 109101021 is 120101901.

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

It is not a de Polignac number, because 109101021 - 2² = 109101017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109101011) 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, 956970 + ... + 957083.

It is an arithmetic number, because the mean of its divisors is an integer number (19140540).

Almost surely, 2^109101021 is an apocalyptic number.

It is an amenable number.

109101021 is a deficient number, since it is larger than the sum of its proper divisors (44023299).

109101021 is a wasteful number, since it uses less digits than its factorization.

109101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1914075.

The product of its (nonzero) digits is 18, while the sum is 15.

The square root of 109101021 is about 10445.1434169187. The cubic root of 109101021 is about 477.8331452550.

Adding to 109101021 its reverse (120101901), we get a palindrome (229202922).

The spelling of 109101021 in words is "one hundred nine million, one hundred one thousand, twenty-one".