212413022320 has 80 divisors (see below), whose sum is σ = 500091242112. Its totient is φ = 83894370560.

The previous prime is 212413022309. The next prime is 212413022323. The reversal of 212413022320 is 23220314212.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×212413022320² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212413022291 and 212413022300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212413022323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13291935 + ... + 13307905.

Almost surely, 2^212413022320 is an apocalyptic number.

212413022320 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 212413022320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (250045621056).

212413022320 is an abundant number, since it is smaller than the sum of its proper divisors (287678219792).

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

212413022320 is a wasteful number, since it uses less digits than its factorization.

212413022320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18070 (or 18064 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 212413022320 its reverse (23220314212), we get a palindrome (235633336532).

The spelling of 212413022320 in words is "two hundred twelve billion, four hundred thirteen million, twenty-two thousand, three hundred twenty".