213232420420 has 12 divisors (see below), whose sum is σ = 447788082924. Its totient is φ = 85292968160.

The previous prime is 213232420409. The next prime is 213232420421. The reversal of 213232420420 is 24024232312.

It can be written as a sum of positive squares in 2 ways, for example, as 136639643904 + 76592776516 = 369648^2 + 276754^2 .

It is not an unprimeable number, because it can be changed into a prime (213232420421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5330810491 + ... + 5330810530.

It is an arithmetic number, because the mean of its divisors is an integer number (37315673577).

Almost surely, 2^213232420420 is an apocalyptic number.

213232420420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213232420420 is an abundant number, since it is smaller than the sum of its proper divisors (234555662504).

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

213232420420 is a wasteful number, since it uses less digits than its factorization.

213232420420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10661621030 (or 10661621028 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 213232420420 its reverse (24024232312), we get a palindrome (237256652732).

The spelling of 213232420420 in words is "two hundred thirteen billion, two hundred thirty-two million, four hundred twenty thousand, four hundred twenty".