4021111206 has 72 divisors (see below), whose sum is σ = 10575540144. Its totient is φ = 1098931680.

The previous prime is 4021111117. The next prime is 4021111267. The reversal of 4021111206 is 6021111204.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 78825 + ... + 119396.

It is an arithmetic number, because the mean of its divisors is an integer number (146882502).

Almost surely, 2^4021111206 is an apocalyptic number.

4021111206 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

4021111206 is an abundant number, since it is smaller than the sum of its proper divisors (6554428938).

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

4021111206 is a wasteful number, since it uses less digits than its factorization.

4021111206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198266 (or 198256 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 4021111206 is about 63412.2323057626. The cubic root of 4021111206 is about 1590.1888158348.

The spelling of 4021111206 in words is "four billion, twenty-one million, one hundred eleven thousand, two hundred six".