212021123130 has 96 divisors (see below), whose sum is σ = 574065273600. Its totient is φ = 56302247232.

The previous prime is 212021123087. The next prime is 212021123183. The reversal of 212021123130 is 31321120212.

212021123130 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 398236 + ... + 763304.

It is an arithmetic number, because the mean of its divisors is an integer number (5979846600).

Almost surely, 2^212021123130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212021123130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287032636800).

212021123130 is an abundant number, since it is smaller than the sum of its proper divisors (362044150470).

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

212021123130 is a wasteful number, since it uses less digits than its factorization.

212021123130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365330 (or 365318 counting only the distinct ones).

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

Adding to 212021123130 its reverse (31321120212), we get a palindrome (243342243342).

The spelling of 212021123130 in words is "two hundred twelve billion, twenty-one million, one hundred twenty-three thousand, one hundred thirty".