213123331232120 has 64 divisors (see below), whose sum is σ = 479752198034400. Its totient is φ = 85209392519680.

The previous prime is 213123331232101. The next prime is 213123331232129. The reversal of 213123331232120 is 21232133321312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213123331232129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1000900226 + ... + 1001113134.

Almost surely, 2^{213123331232120} is an apocalyptic number.

213123331232120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213123331232120 is an abundant number, since it is smaller than the sum of its proper divisors (266628866802280).

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

213123331232120 is a wasteful number, since it uses less digits than its factorization.

213123331232120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224528 (or 224524 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 29.

Adding to 213123331232120 its reverse (21232133321312), we get a palindrome (234355464553432).

The spelling of 213123331232120 in words is "two hundred thirteen trillion, one hundred twenty-three billion, three hundred thirty-one million, two hundred thirty-two thousand, one hundred twenty".