211220200000212 has 96 divisors (see below), whose sum is σ = 533118935647872. Its totient is φ = 64701815886336.

The previous prime is 211220200000211. The next prime is 211220200000253. The reversal of 211220200000212 is 212000002022112.

It is a super-2 number, since 2×211220200000212² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211220200000191 and 211220200000200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211220200000211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 945990778 + ... + 946214030.

It is an arithmetic number, because the mean of its divisors is an integer number (5553322246332).

Almost surely, 2^{211220200000212} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211220200000212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266559467823936).

211220200000212 is an abundant number, since it is smaller than the sum of its proper divisors (321898735647660).

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

211220200000212 is a wasteful number, since it uses less digits than its factorization.

211220200000212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250217 (or 250215 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 211220200000212 its reverse (212000002022112), we get a palindrome (423220202022324).

The spelling of 211220200000212 in words is "two hundred eleven trillion, two hundred twenty billion, two hundred million, two hundred twelve", and thus it is an aban number.