213122231263140 has 48 divisors (see below), whose sum is σ = 611296936508160. Its totient is φ = 55446434149120.

The previous prime is 213122231263129. The next prime is 213122231263147. The reversal of 213122231263140 is 41362132221312.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (213122231263147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43317524220 + ... + 43317529139.

It is an arithmetic number, because the mean of its divisors is an integer number (12735352843920).

Almost surely, 2^{213122231263140} is an apocalyptic number.

213122231263140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213122231263140 is an abundant number, since it is smaller than the sum of its proper divisors (398174705245020).

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

213122231263140 is a wasteful number, since it uses less digits than its factorization.

213122231263140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86635053412 (or 86635053410 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

Adding to 213122231263140 its reverse (41362132221312), we get a palindrome (254484363484452).

The spelling of 213122231263140 in words is "two hundred thirteen trillion, one hundred twenty-two billion, two hundred thirty-one million, two hundred sixty-three thousand, one hundred forty".