210121220212012 has 6 divisors (see below), whose sum is σ = 367712135371028. Its totient is φ = 105060610106004.

The previous prime is 210121220211953. The next prime is 210121220212021. The reversal of 210121220212012 is 210212022121012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26265152526498 + ... + 26265152526505.

Almost surely, 2^{210121220212012} is an apocalyptic number.

It is an amenable number.

210121220212012 is a deficient number, since it is larger than the sum of its proper divisors (157590915159016).

210121220212012 is a wasteful number, since it uses less digits than its factorization.

210121220212012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52530305053007 (or 52530305053005 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 210121220212012 its reverse (210212022121012), we get a palindrome (420333242333024).

The spelling of 210121220212012 in words is "two hundred ten trillion, one hundred twenty-one billion, two hundred twenty million, two hundred twelve thousand, twelve".