420322121212 has 24 divisors (see below), whose sum is σ = 840706757856. Its totient is φ = 180124655808.

The previous prime is 420322121129. The next prime is 420322121213. The reversal of 420322121212 is 212121223024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420322121213) 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, 170203 + ... + 932530.

It is an arithmetic number, because the mean of its divisors is an integer number (35029448244).

Almost surely, 2^420322121212 is an apocalyptic number.

It is an amenable number.

420322121212 is an abundant number, since it is smaller than the sum of its proper divisors (420384636644).

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

420322121212 is a wasteful number, since it uses less digits than its factorization.

420322121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1116357 (or 1116355 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 420322121212 its reverse (212121223024), we get a palindrome (632443344236).

The spelling of 420322121212 in words is "four hundred twenty billion, three hundred twenty-two million, one hundred twenty-one thousand, two hundred twelve".