212212210020220 has 24 divisors (see below), whose sum is σ = 471860090516304. Its totient is φ = 79891655536896.

The previous prime is 212212210020191. The next prime is 212212210020247. The reversal of 212212210020220 is 22020012212212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 312076779102 + ... + 312076779781.

It is an arithmetic number, because the mean of its divisors is an integer number (19660837104846).

Almost surely, 2^{212212210020220} is an apocalyptic number.

212212210020220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212212210020220 is an abundant number, since it is smaller than the sum of its proper divisors (259647880496084).

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

212212210020220 is a wasteful number, since it uses less digits than its factorization.

212212210020220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624153558909 (or 624153558907 counting only the distinct ones).

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

Adding to 212212210020220 its reverse (22020012212212), we get a palindrome (234232222232432).

The spelling of 212212210020220 in words is "two hundred twelve trillion, two hundred twelve billion, two hundred ten million, twenty thousand, two hundred twenty".