212420234023 has 4 divisors (see below), whose sum is σ = 223600246360. Its totient is φ = 201240221688.

The previous prime is 212420234017. The next prime is 212420234029. The reversal of 212420234023 is 320432024212.

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

It is an interprime number because it is at equal distance from previous prime (212420234017) and next prime (212420234029).

It is a cyclic number.

It is not a de Polignac number, because 212420234023 - 2⁹ = 212420233511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212420234029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5590006140 + ... + 5590006177.

It is an arithmetic number, because the mean of its divisors is an integer number (55900061590).

Almost surely, 2^212420234023 is an apocalyptic number.

212420234023 is a deficient number, since it is larger than the sum of its proper divisors (11180012337).

212420234023 is a wasteful number, since it uses less digits than its factorization.

212420234023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11180012336.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 212420234023 its reverse (320432024212), we get a palindrome (532852258235).

The spelling of 212420234023 in words is "two hundred twelve billion, four hundred twenty million, two hundred thirty-four thousand, twenty-three".