212303213220 has 96 divisors (see below), whose sum is σ = 683930016000. Its totient is φ = 48200753664.

The previous prime is 212303213207. The next prime is 212303213303. The reversal of 212303213220 is 22312303212.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1633675 + ... + 1758834.

It is an arithmetic number, because the mean of its divisors is an integer number (7124271000).

Almost surely, 2^212303213220 is an apocalyptic number.

212303213220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212303213220 is an abundant number, since it is smaller than the sum of its proper divisors (471626802780).

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

212303213220 is a wasteful number, since it uses less digits than its factorization.

212303213220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3392677 (or 3392675 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 212303213220 its reverse (22312303212), we get a palindrome (234615516432).

The spelling of 212303213220 in words is "two hundred twelve billion, three hundred three million, two hundred thirteen thousand, two hundred twenty".