213021313101212 has 24 divisors (see below), whose sum is σ = 464773774039680. Its totient is φ = 82995316792560.

The previous prime is 213021313101143. The next prime is 213021313101217. The reversal of 213021313101212 is 212101313120312.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213021313101217) 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, 345813819662 + ... + 345813820277.

It is an arithmetic number, because the mean of its divisors is an integer number (19365573918320).

Almost surely, 2^{213021313101212} is an apocalyptic number.

213021313101212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

213021313101212 is an abundant number, since it is smaller than the sum of its proper divisors (251752460938468).

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

213021313101212 is a wasteful number, since it uses less digits than its factorization.

213021313101212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691627639961 (or 691627639959 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 213021313101212 its reverse (212101313120312), we get a palindrome (425122626221524).

The spelling of 213021313101212 in words is "two hundred thirteen trillion, twenty-one billion, three hundred thirteen million, one hundred one thousand, two hundred twelve".