212120122010 has 16 divisors (see below), whose sum is σ = 381828724200. Its totient is φ = 84845270016.

The previous prime is 212120122007. The next prime is 212120122013. The reversal of 212120122010 is 10221021212.

It is an interprime number because it is at equal distance from previous prime (212120122007) and next prime (212120122013).

It can be written as a sum of positive squares in 4 ways, for example, as 115239201961 + 96880920049 = 339469^2 + 311257^2 .

It is not an unprimeable number, because it can be changed into a prime (212120122013) by changing a digit.

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, 11255 + ... + 651434.

Almost surely, 2^212120122010 is an apocalyptic number.

212120122010 is a deficient number, since it is larger than the sum of its proper divisors (169708602190).

212120122010 is a wasteful number, since it uses less digits than its factorization.

212120122010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694705.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 212120122010 its reverse (10221021212), we get a palindrome (222341143222).

The spelling of 212120122010 in words is "two hundred twelve billion, one hundred twenty million, one hundred twenty-two thousand, ten".