212815067322 has 128 divisors (see below), whose sum is σ = 522831697920. Its totient is φ = 56825936640.

The previous prime is 212815067317. The next prime is 212815067327. The reversal of 212815067322 is 223760518212.

It is an interprime number because it is at equal distance from previous prime (212815067317) and next prime (212815067327).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (212815067327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10034013 + ... + 10055199.

It is an arithmetic number, because the mean of its divisors is an integer number (4084622640).

Almost surely, 2^212815067322 is an apocalyptic number.

212815067322 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 212815067322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261415848960).

212815067322 is an abundant number, since it is smaller than the sum of its proper divisors (310016630598).

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

212815067322 is a wasteful number, since it uses less digits than its factorization.

212815067322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21748.

The product of its (nonzero) digits is 80640, while the sum is 39.

The spelling of 212815067322 in words is "two hundred twelve billion, eight hundred fifteen million, sixty-seven thousand, three hundred twenty-two".