106021881 has 48 divisors (see below), whose sum is σ = 192291840. Its totient is φ = 54885600.

The previous prime is 106021849. The next prime is 106021901. The reversal of 106021881 is 188120601.

It is not a de Polignac number, because 106021881 - 2⁵ = 106021849 is a prime.

It is a super-2 number, since 2×106021881² = 22481278501556322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (106021831) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25606 + ... + 29456.

It is an arithmetic number, because the mean of its divisors is an integer number (4006080).

Almost surely, 2^106021881 is an apocalyptic number.

It is an amenable number.

106021881 is a deficient number, since it is larger than the sum of its proper divisors (86269959).

106021881 is a wasteful number, since it uses less digits than its factorization.

106021881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3906 (or 3903 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 27.

The square root of 106021881 is about 10296.6927214519. The cubic root of 106021881 is about 473.2949111950.

The spelling of 106021881 in words is "one hundred six million, twenty-one thousand, eight hundred eighty-one".