212101010 has 64 divisors (see below), whose sum is σ = 445751424. Its totient is φ = 71808000.

The previous prime is 212100961. The next prime is 212101013. The reversal of 212101010 is 10101212.

212101010 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (212101013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 188309 + ... + 189431.

It is an arithmetic number, because the mean of its divisors is an integer number (6964866).

Almost surely, 2^212101010 is an apocalyptic number.

212101010 is an abundant number, since it is smaller than the sum of its proper divisors (233650414).

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

212101010 is a wasteful number, since it uses less digits than its factorization.

212101010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1259.

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 212101010 is about 14563.6880631247. The cubic root of 212101010 is about 596.3678812969.

Adding to 212101010 its reverse (10101212), we get a palindrome (222202222).

The spelling of 212101010 in words is "two hundred twelve million, one hundred one thousand, ten".