109211020 has 12 divisors (see below), whose sum is σ = 229343184. Its totient is φ = 43684400.

The previous prime is 109210999. The next prime is 109211023. The reversal of 109211020 is 20112901.

It is a junction number, because it is equal to n+sod(n) for n = 109210985 and 109211003.

It is not an unprimeable number, because it can be changed into a prime (109211023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2730256 + ... + 2730295.

It is an arithmetic number, because the mean of its divisors is an integer number (19111932).

Almost surely, 2^109211020 is an apocalyptic number.

109211020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109211020 is an abundant number, since it is smaller than the sum of its proper divisors (120132164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

109211020 is a wasteful number, since it uses less digits than its factorization.

109211020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5460560 (or 5460558 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 109211020 is about 10450.4076475514. The cubic root of 109211020 is about 477.9936799991.

Adding to 109211020 its reverse (20112901), we get a palindrome (129323921).

The spelling of 109211020 in words is "one hundred nine million, two hundred eleven thousand, twenty".