213122132020 has 48 divisors (see below), whose sum is σ = 511829474688. Its totient is φ = 73022394240.

The previous prime is 213122132011. The next prime is 213122132063. The reversal of 213122132020 is 20231221312.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 286551 + ... + 712990.

It is an arithmetic number, because the mean of its divisors is an integer number (10663114056).

Almost surely, 2^213122132020 is an apocalyptic number.

213122132020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213122132020 is an abundant number, since it is smaller than the sum of its proper divisors (298707342668).

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

213122132020 is a wasteful number, since it uses less digits than its factorization.

213122132020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001080 (or 1001078 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 213122132020 its reverse (20231221312), we get a palindrome (233353353332).

The spelling of 213122132020 in words is "two hundred thirteen billion, one hundred twenty-two million, one hundred thirty-two thousand, twenty".