212102120202220 has 24 divisors (see below), whose sum is σ = 464780298183264. Its totient is φ = 81152115555456.

The previous prime is 212102120202127. The next prime is 212102120202281. The reversal of 212102120202220 is 22202021201212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230545782369 + ... + 230545783288.

It is an arithmetic number, because the mean of its divisors is an integer number (19365845757636).

Almost surely, 2^{212102120202220} is an apocalyptic number.

212102120202220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212102120202220 is an abundant number, since it is smaller than the sum of its proper divisors (252678177981044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212102120202220 is a wasteful number, since it uses less digits than its factorization.

212102120202220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461091565689 (or 461091565687 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 212102120202220 its reverse (22202021201212), we get a palindrome (234304141403432).

The spelling of 212102120202220 in words is "two hundred twelve trillion, one hundred two billion, one hundred twenty million, two hundred two thousand, two hundred twenty".