212011323132 has 96 divisors (see below), whose sum is σ = 579566679552. Its totient is φ = 59066931456.

The previous prime is 212011323131. The next prime is 212011323133. The reversal of 212011323132 is 231323110212.

It is an interprime number because it is at equal distance from previous prime (212011323131) and next prime (212011323133).

It is a super-2 number, since 2×212011323132² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 212011323099 and 212011323108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212011323131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 579598 + ... + 871754.

It is an arithmetic number, because the mean of its divisors is an integer number (6037152912).

Almost surely, 2^212011323132 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212011323132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (289783339776).

212011323132 is an abundant number, since it is smaller than the sum of its proper divisors (367555356420).

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

212011323132 is a wasteful number, since it uses less digits than its factorization.

212011323132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292387 (or 292385 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 212011323132 its reverse (231323110212), we get a palindrome (443334433344).

The spelling of 212011323132 in words is "two hundred twelve billion, eleven million, three hundred twenty-three thousand, one hundred thirty-two".