212021020200220 has 192 divisors, whose sum is σ = 588092862744576. Its totient is φ = 62162254725120.

The previous prime is 212021020200181. The next prime is 212021020200239. The reversal of 212021020200220 is 22002020120212.

It is a junction number, because it is equal to n+sod(n) for n = 212021020200194 and 212021020200203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 44407884 + ... + 48949996.

It is an arithmetic number, because the mean of its divisors is an integer number (3062983660128).

Almost surely, 2^{212021020200220} is an apocalyptic number.

212021020200220 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 212021020200220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (294046431372288).

212021020200220 is an abundant number, since it is smaller than the sum of its proper divisors (376071842544356).

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

212021020200220 is a wasteful number, since it uses less digits than its factorization.

212021020200220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4543940 (or 4543938 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 212021020200220 its reverse (22002020120212), we get a palindrome (234023040320432).

The spelling of 212021020200220 in words is "two hundred twelve trillion, twenty-one billion, twenty million, two hundred thousand, two hundred twenty".