213012233121 has 8 divisors (see below), whose sum is σ = 284074757824. Its totient is φ = 141978931920.

The previous prime is 213012233107. The next prime is 213012233141. The reversal of 213012233121 is 121332210312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 213012233121 - 2¹⁵ = 213012200353 is a prime.

It is a super-2 number, since 2×213012233121² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213012233141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7288861 + ... + 7318026.

It is an arithmetic number, because the mean of its divisors is an integer number (35509344728).

Almost surely, 2^213012233121 is an apocalyptic number.

It is an amenable number.

213012233121 is a deficient number, since it is larger than the sum of its proper divisors (71062524703).

213012233121 is a wasteful number, since it uses less digits than its factorization.

213012233121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14611751.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 213012233121 its reverse (121332210312), we get a palindrome (334344443433).

The spelling of 213012233121 in words is "two hundred thirteen billion, twelve million, two hundred thirty-three thousand, one hundred twenty-one".