212021120102 has 24 divisors (see below), whose sum is σ = 349598354448. Its totient is φ = 96365974320.

The previous prime is 212021120093. The next prime is 212021120249. The reversal of 212021120102 is 201021120212.

212021120102 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4428263 + ... + 4475885.

It is an arithmetic number, because the mean of its divisors is an integer number (14566598102).

Almost surely, 2^212021120102 is an apocalyptic number.

212021120102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212021120102 is a deficient number, since it is larger than the sum of its proper divisors (137577234346).

212021120102 is a wasteful number, since it uses less digits than its factorization.

212021120102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66044 (or 66033 counting only the distinct ones).

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

Adding to 212021120102 its reverse (201021120212), we get a palindrome (413042240314).

The spelling of 212021120102 in words is "two hundred twelve billion, twenty-one million, one hundred twenty thousand, one hundred two".