106881821 has 8 divisors (see below), whose sum is σ = 114352800. Its totient is φ = 99595440.

The previous prime is 106881811. The next prime is 106881829. The reversal of 106881821 is 128188601.

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

It is a cyclic number.

It is not a de Polignac number, because 106881821 - 2¹⁰ = 106880797 is a prime.

It is a super-2 number, since 2×106881821² = 22847447320552082, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106881829) 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, 44951 + ... + 47268.

It is an arithmetic number, because the mean of its divisors is an integer number (14294100).

Almost surely, 2^106881821 is an apocalyptic number.

It is an amenable number.

106881821 is a deficient number, since it is larger than the sum of its proper divisors (7470979).

106881821 is an equidigital number, since it uses as much as digits as its factorization.

106881821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92299.

The product of its (nonzero) digits is 6144, while the sum is 35.

The square root of 106881821 is about 10338.3664570376. The cubic root of 106881821 is about 474.5710935325.

The spelling of 106881821 in words is "one hundred six million, eight hundred eighty-one thousand, eight hundred twenty-one".