212303313020 has 72 divisors (see below), whose sum is σ = 470794842000. Its totient is φ = 80407713024.

The previous prime is 212303312971. The next prime is 212303313037. The reversal of 212303313020 is 20313303212.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 212303312983 and 212303313001.

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, 15147776 + ... + 15161784.

It is an arithmetic number, because the mean of its divisors is an integer number (6538817250).

Almost surely, 2^212303313020 is an apocalyptic number.

212303313020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212303313020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235397421000).

212303313020 is an abundant number, since it is smaller than the sum of its proper divisors (258491528980).

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

212303313020 is a wasteful number, since it uses less digits than its factorization.

212303313020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16155 (or 16134 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 212303313020 its reverse (20313303212), we get a palindrome (232616616232).

The spelling of 212303313020 in words is "two hundred twelve billion, three hundred three million, three hundred thirteen thousand, twenty".