212120301023 has 4 divisors (see below), whose sum is σ = 212293744848. Its totient is φ = 211946857200.

The previous prime is 212120301017. The next prime is 212120301047. The reversal of 212120301023 is 320103021212.

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 212120301023 - 2¹⁰ = 212120299999 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212120300992 and 212120301010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212120301013) 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, 86720078 + ... + 86722523.

It is an arithmetic number, because the mean of its divisors is an integer number (53073436212).

Almost surely, 2^212120301023 is an apocalyptic number.

212120301023 is a deficient number, since it is larger than the sum of its proper divisors (173443825).

212120301023 is a wasteful number, since it uses less digits than its factorization.

212120301023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173443824.

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

Adding to 212120301023 its reverse (320103021212), we get a palindrome (532223322235).

The spelling of 212120301023 in words is "two hundred twelve billion, one hundred twenty million, three hundred one thousand, twenty-three".