2021012210 has 16 divisors (see below), whose sum is σ = 4157510976. Its totient is φ = 692918448.

The previous prime is 2021012183. The next prime is 2021012243. The reversal of 2021012210 is 122101202.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2021012191 and 2021012200.

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 7 ways as a sum of consecutive naturals, for example, 14435732 + ... + 14435871.

It is an arithmetic number, because the mean of its divisors is an integer number (259844436).

Almost surely, 2^2021012210 is an apocalyptic number.

2021012210 is an abundant number, since it is smaller than the sum of its proper divisors (2136498766).

2021012210 is a wasteful number, since it uses less digits than its factorization.

2021012210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28871617.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2021012210 is about 44955.6693866302. The cubic root of 2021012210 is about 1264.3179750853.

Adding to 2021012210 its reverse (122101202), we get a palindrome (2143113412).

The spelling of 2021012210 in words is "two billion, twenty-one million, twelve thousand, two hundred ten".