109801221 has 8 divisors (see below), whose sum is σ = 151450080. Its totient is φ = 70676592.

The previous prime is 109801217. The next prime is 109801261. The reversal of 109801221 is 122108901.

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

It is not a de Polignac number, because 109801221 - 2² = 109801217 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 109801191 and 109801200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109801261) 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, 630955 + ... + 631128.

It is an arithmetic number, because the mean of its divisors is an integer number (18931260).

Almost surely, 2^109801221 is an apocalyptic number.

It is an amenable number.

109801221 is a deficient number, since it is larger than the sum of its proper divisors (41648859).

109801221 is a wasteful number, since it uses less digits than its factorization.

109801221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1262115.

The product of its (nonzero) digits is 288, while the sum is 24.

The square root of 109801221 is about 10478.6077796623. The cubic root of 109801221 is about 478.8531954236.

The spelling of 109801221 in words is "one hundred nine million, eight hundred one thousand, two hundred twenty-one".