212100111010 has 8 divisors (see below), whose sum is σ = 381780199836. Its totient is φ = 84840044400.

The previous prime is 212100110969. The next prime is 212100111059. The reversal of 212100111010 is 10111001212.

It can be written as a sum of positive squares in 2 ways, for example, as 190042811721 + 22057299289 = 435939^2 + 148517^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (10), and also a Moran number because the ratio is a prime number: 21210011101 = 212100111010 / (2 + 1 + 2 + 1 + 0 + 0 + 1 + 1 + 1 + 0 + 1 + 0).

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 3 ways as a sum of consecutive naturals, for example, 10605005541 + ... + 10605005560.

Almost surely, 2^212100111010 is an apocalyptic number.

212100111010 is a deficient number, since it is larger than the sum of its proper divisors (169680088826).

212100111010 is a wasteful number, since it uses less digits than its factorization.

212100111010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21210011108.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 212100111010 its reverse (10111001212), we get a palindrome (222211112222).

The spelling of 212100111010 in words is "two hundred twelve billion, one hundred million, one hundred eleven thousand, ten".