212321101212220 has 192 divisors, whose sum is σ = 619299746150400. Its totient is φ = 58980927882240.

The previous prime is 212321101212193. The next prime is 212321101212223. The reversal of 212321101212220 is 22212101123212.

212321101212220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 212321101212191 and 212321101212200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212321101212223) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 182272000 + ... + 183433159.

It is an arithmetic number, because the mean of its divisors is an integer number (3225519511200).

Almost surely, 2^{212321101212220} is an apocalyptic number.

212321101212220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212321101212220 is an abundant number, since it is smaller than the sum of its proper divisors (406978644938180).

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

212321101212220 is a wasteful number, since it uses less digits than its factorization.

212321101212220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365705228 (or 365705226 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 212321101212220 its reverse (22212101123212), we get a palindrome (234533202335432).

The spelling of 212321101212220 in words is "two hundred twelve trillion, three hundred twenty-one billion, one hundred one million, two hundred twelve thousand, two hundred twenty".