212120101010 has 16 divisors (see below), whose sum is σ = 381842812800. Its totient is φ = 84842122416.

The previous prime is 212120100967. The next prime is 212120101049. The reversal of 212120101010 is 10101021212.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 212120100982 and 212120101000.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 587720 + ... + 877299.

It is an arithmetic number, because the mean of its divisors is an integer number (23865175800).

Almost surely, 2^212120101010 is an apocalyptic number.

212120101010 is a deficient number, since it is larger than the sum of its proper divisors (169722711790).

212120101010 is a wasteful number, since it uses less digits than its factorization.

212120101010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1479505.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 212120101010 its reverse (10101021212), we get a palindrome (222221122222).

The spelling of 212120101010 in words is "two hundred twelve billion, one hundred twenty million, one hundred one thousand, ten".