213000121232 has 40 divisors (see below), whose sum is σ = 439159392000. Its totient is φ = 99731630592.

The previous prime is 213000121223. The next prime is 213000121241. The reversal of 213000121232 is 232121000312.

It is an interprime number because it is at equal distance from previous prime (213000121223) and next prime (213000121241).

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 213000121232.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1913432 + ... + 2021687.

It is an arithmetic number, because the mean of its divisors is an integer number (10978984800).

Almost surely, 2^213000121232 is an apocalyptic number.

It is an amenable number.

213000121232 is an abundant number, since it is smaller than the sum of its proper divisors (226159270768).

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

213000121232 is a wasteful number, since it uses less digits than its factorization.

213000121232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3935343 (or 3935337 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 213000121232 its reverse (232121000312), we get a palindrome (445121121544).

The spelling of 213000121232 in words is "two hundred thirteen billion, one hundred twenty-one thousand, two hundred thirty-two".