212330231021 has 8 divisors (see below), whose sum is σ = 220136716800. Its totient is φ = 204583565520.

The previous prime is 212330230991. The next prime is 212330231027. The reversal of 212330231021 is 120132033212.

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

It is a cyclic number.

It is not a de Polignac number, because 212330231021 - 2³⁴ = 195150361837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212330230984 and 212330231002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212330231027) 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, 14947841 + ... + 14962038.

It is an arithmetic number, because the mean of its divisors is an integer number (27517089600).

Almost surely, 2^212330231021 is an apocalyptic number.

It is an amenable number.

212330231021 is a deficient number, since it is larger than the sum of its proper divisors (7806485779).

212330231021 is a wasteful number, since it uses less digits than its factorization.

212330231021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29910139.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 212330231021 its reverse (120132033212), we get a palindrome (332462264233).

The spelling of 212330231021 in words is "two hundred twelve billion, three hundred thirty million, two hundred thirty-one thousand, twenty-one".