212213224442320 has 40 divisors (see below), whose sum is σ = 493412456650824. Its totient is φ = 84882414968832.

The previous prime is 212213224442293. The next prime is 212213224442377. The reversal of 212213224442320 is 23244422312212.

It can be written as a sum of positive squares in 4 ways, for example, as 14777227821456 + 197435996620864 = 3844116^2 + 14051192^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42541149 + ... + 47267068.

Almost surely, 2^{212213224442320} is an apocalyptic number.

212213224442320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212213224442320 is an abundant number, since it is smaller than the sum of its proper divisors (281199232208504).

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

212213224442320 is a wasteful number, since it uses less digits than its factorization.

212213224442320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89837767 (or 89837761 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 34.

Adding to 212213224442320 its reverse (23244422312212), we get a palindrome (235457646754532).

The spelling of 212213224442320 in words is "two hundred twelve trillion, two hundred thirteen billion, two hundred twenty-four million, four hundred forty-two thousand, three hundred twenty".