212010013231 has 4 divisors (see below), whose sum is σ = 223168435000. Its totient is φ = 200851591464.

The previous prime is 212010013223. The next prime is 212010013291. The reversal of 212010013231 is 132310010212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212010013231 - 2³ = 212010013223 is a prime.

It is a super-2 number, since 2×212010013231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212010013291) 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 3 ways as a sum of consecutive naturals, for example, 5579210856 + ... + 5579210893.

It is an arithmetic number, because the mean of its divisors is an integer number (55792108750).

Almost surely, 2^212010013231 is an apocalyptic number.

212010013231 is a deficient number, since it is larger than the sum of its proper divisors (11158421769).

212010013231 is a wasteful number, since it uses less digits than its factorization.

212010013231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11158421768.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 212010013231 its reverse (132310010212), we get a palindrome (344320023443).

The spelling of 212010013231 in words is "two hundred twelve billion, ten million, thirteen thousand, two hundred thirty-one".