212021103132 has 144 divisors (see below), whose sum is σ = 601005000960. Its totient is φ = 62628401664.

The previous prime is 212021103127. The next prime is 212021103137. The reversal of 212021103132 is 231301120212.

It is an interprime number because it is at equal distance from previous prime (212021103127) and next prime (212021103137).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021103137) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1839433 + ... + 1951295.

It is an arithmetic number, because the mean of its divisors is an integer number (4173645840).

Almost surely, 2^212021103132 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 212021103132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (300502500480).

212021103132 is an abundant number, since it is smaller than the sum of its proper divisors (388983897828).

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

212021103132 is a wasteful number, since it uses less digits than its factorization.

212021103132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112072 (or 112067 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 212021103132 its reverse (231301120212), we get a palindrome (443322223344).

The spelling of 212021103132 in words is "two hundred twelve billion, twenty-one million, one hundred three thousand, one hundred thirty-two".