212020321230 has 48 divisors (see below), whose sum is σ = 571669613424. Its totient is φ = 56538751680.

The previous prime is 212020321157. The next prime is 212020321267. The reversal of 212020321230 is 32123020212.

212020321230 is a `hidden beast` number, since 212 + 0 + 203 + 21 + 230 = 666.

It is a super-2 number, since 2×212020321230² (a number of 23 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43623151 + ... + 43628010.

It is an arithmetic number, because the mean of its divisors is an integer number (11909783613).

Almost surely, 2^212020321230 is an apocalyptic number.

212020321230 is an abundant number, since it is smaller than the sum of its proper divisors (359649292194).

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

212020321230 is an equidigital number, since it uses as much as digits as its factorization.

212020321230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87251183 (or 87251171 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 212020321230 its reverse (32123020212), we get a palindrome (244143341442).

The spelling of 212020321230 in words is "two hundred twelve billion, twenty million, three hundred twenty-one thousand, two hundred thirty".