109101020 has 48 divisors (see below), whose sum is σ = 262906560. Its totient is φ = 37254144.

The previous prime is 109101017. The next prime is 109101067. The reversal of 109101020 is 20101901.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 109100986 and 109101004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36212 + ... + 39108.

It is an arithmetic number, because the mean of its divisors is an integer number (5477220).

Almost surely, 2^109101020 is an apocalyptic number.

109101020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 109101020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131453280).

109101020 is an abundant number, since it is smaller than the sum of its proper divisors (153805540).

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

109101020 is a wasteful number, since it uses less digits than its factorization.

109101020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3182 (or 3180 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 109101020 is about 10445.1433690496. The cubic root of 109101020 is about 477.8331437951.

Adding to 109101020 its reverse (20101901), we get a palindrome (129202921).

The spelling of 109101020 in words is "one hundred nine million, one hundred one thousand, twenty".