212011020210220 has 144 divisors (see below), whose sum is σ = 559613254281984. Its totient is φ = 66042995356800.

The previous prime is 212011020210211. The next prime is 212011020210281. The reversal of 212011020210220 is 22012020110212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 212011020210194 and 212011020210203.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25555755 + ... + 32819485.

It is an arithmetic number, because the mean of its divisors is an integer number (3886203154736).

Almost surely, 2^{212011020210220} is an apocalyptic number.

212011020210220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212011020210220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (279806627140992).

212011020210220 is an abundant number, since it is smaller than the sum of its proper divisors (347602234071764).

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

212011020210220 is a wasteful number, since it uses less digits than its factorization.

212011020210220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7265492 (or 7265479 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 212011020210220 its reverse (22012020110212), we get a palindrome (234023040320432).

The spelling of 212011020210220 in words is "two hundred twelve trillion, eleven billion, twenty million, two hundred ten thousand, two hundred twenty".