109801220 has 24 divisors (see below), whose sum is σ = 234365208. Its totient is φ = 43200000.

The previous prime is 109801217. The next prime is 109801261. The reversal of 109801220 is 22108901.

It can be written as a sum of positive squares in 4 ways, for example, as 17372224 + 92428996 = 4168^2 + 9614^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43781 + ... + 46220.

It is an arithmetic number, because the mean of its divisors is an integer number (9765217).

Almost surely, 2^109801220 is an apocalyptic number.

109801220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109801220 is an abundant number, since it is smaller than the sum of its proper divisors (124563988).

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

109801220 is a wasteful number, since it uses less digits than its factorization.

109801220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90071 (or 90069 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 109801220 is about 10478.6077319461. The cubic root of 109801220 is about 478.8531939699.

It can be divided in two parts, 10980 and 1220, that multiplied together give a square (13395600 = 3660²).

The spelling of 109801220 in words is "one hundred nine million, eight hundred one thousand, two hundred twenty".