2021140206 has 24 divisors (see below), whose sum is σ = 4450928664. Its totient is φ = 662668560.

The previous prime is 2021140169. The next prime is 2021140229. The reversal of 2021140206 is 6020411202.

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 (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 919276 + ... + 921471.

It is an arithmetic number, because the mean of its divisors is an integer number (185455361).

Almost surely, 2^2021140206 is an apocalyptic number.

2021140206 is an abundant number, since it is smaller than the sum of its proper divisors (2429788458).

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

2021140206 is a wasteful number, since it uses less digits than its factorization.

2021140206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1840816 (or 1840813 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2021140206 is about 44957.0929442730. The cubic root of 2021140206 is about 1264.3446653788.

Adding to 2021140206 its reverse (6020411202), we get a palindrome (8041551408).

The spelling of 2021140206 in words is "two billion, twenty-one million, one hundred forty thousand, two hundred six".