212102210121220 has 48 divisors (see below), whose sum is σ = 448937433806400. Its totient is φ = 84170230002560.

The previous prime is 212102210121211. The next prime is 212102210121227. The reversal of 212102210121220 is 22121012201212.

212102210121220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (212102210121227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1475875 + ... + 20649034.

It is an arithmetic number, because the mean of its divisors is an integer number (9352863204300).

Almost surely, 2^{212102210121220} is an apocalyptic number.

212102210121220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212102210121220 is an abundant number, since it is smaller than the sum of its proper divisors (236835223685180).

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

212102210121220 is a wasteful number, since it uses less digits than its factorization.

212102210121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22128708 (or 22128706 counting only the distinct ones).

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

Adding to 212102210121220 its reverse (22121012201212), we get a palindrome (234223222322432).

The spelling of 212102210121220 in words is "two hundred twelve trillion, one hundred two billion, two hundred ten million, one hundred twenty-one thousand, two hundred twenty".