212023421320 has 64 divisors (see below), whose sum is σ = 516861544320. Its totient is φ = 77964278784.

The previous prime is 212023421279. The next prime is 212023421321. The reversal of 212023421320 is 23124320212.

It is a junction number, because it is equal to n+sod(n) for n = 212023421291 and 212023421300.

It is not an unprimeable number, because it can be changed into a prime (212023421321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3596332 + ... + 3654811.

It is an arithmetic number, because the mean of its divisors is an integer number (8075961630).

Almost surely, 2^212023421320 is an apocalyptic number.

212023421320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212023421320 is an abundant number, since it is smaller than the sum of its proper divisors (304838123000).

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

212023421320 is a wasteful number, since it uses less digits than its factorization.

212023421320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7251214 (or 7251210 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 212023421320 its reverse (23124320212), we get a palindrome (235147741532).

The spelling of 212023421320 in words is "two hundred twelve billion, twenty-three million, four hundred twenty-one thousand, three hundred twenty".