321200020212 has 24 divisors (see below), whose sum is σ = 793552991616. Its totient is φ = 100768633728.

The previous prime is 321200020177. The next prime is 321200020249. The reversal of 321200020212 is 212020002123.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 321200020191 and 321200020200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 787254748 + ... + 787255155.

It is an arithmetic number, because the mean of its divisors is an integer number (33064707984).

Almost surely, 2^321200020212 is an apocalyptic number.

It is an amenable number.

321200020212 is an abundant number, since it is smaller than the sum of its proper divisors (472352971404).

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

321200020212 is a wasteful number, since it uses less digits than its factorization.

321200020212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574509927 (or 1574509925 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 321200020212 its reverse (212020002123), we get a palindrome (533220022335).

The spelling of 321200020212 in words is "three hundred twenty-one billion, two hundred million, twenty thousand, two hundred twelve".