212322321020 has 24 divisors (see below), whose sum is σ = 446041457568. Its totient is φ = 84897579200.

The previous prime is 212322320941. The next prime is 212322321023. The reversal of 212322321020 is 20123223212.

It is a happy number.

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 = 212322320983 and 212322321001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212322321023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1903751 + ... + 2012190.

It is an arithmetic number, because the mean of its divisors is an integer number (18585060732).

Almost surely, 2^212322321020 is an apocalyptic number.

212322321020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212322321020 is an abundant number, since it is smaller than the sum of its proper divisors (233719136548).

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

212322321020 is a wasteful number, since it uses less digits than its factorization.

212322321020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3918661 (or 3918659 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 212322321020 its reverse (20123223212), we get a palindrome (232445544232).

The spelling of 212322321020 in words is "two hundred twelve billion, three hundred twenty-two million, three hundred twenty-one thousand, twenty".