212020232221220 has 96 divisors (see below), whose sum is σ = 472407679941120. Its totient is φ = 79763814789120.

The previous prime is 212020232221159. The next prime is 212020232221297. The reversal of 212020232221220 is 22122232020212.

It is a super-2 number, since 2×212020232221220² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3480116 + ... + 20884244.

It is an arithmetic number, because the mean of its divisors is an integer number (4920913332720).

Almost surely, 2^{212020232221220} is an apocalyptic number.

212020232221220 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 212020232221220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236203839970560).

212020232221220 is an abundant number, since it is smaller than the sum of its proper divisors (260387447719900).

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

212020232221220 is a wasteful number, since it uses less digits than its factorization.

212020232221220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17404605 (or 17404603 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 212020232221220 its reverse (22122232020212), we get a palindrome (234142464241432).

The spelling of 212020232221220 in words is "two hundred twelve trillion, twenty billion, two hundred thirty-two million, two hundred twenty-one thousand, two hundred twenty".