212011301023 has 4 divisors (see below), whose sum is σ = 212031781720. Its totient is φ = 211990820328.

The previous prime is 212011301011. The next prime is 212011301027. The reversal of 212011301023 is 320103110212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212011301023 is a prime.

It is a super-2 number, since 2×212011301023² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212011300988 and 212011301006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212011301027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10224813 + ... + 10245526.

It is an arithmetic number, because the mean of its divisors is an integer number (53007945430).

Almost surely, 2^212011301023 is an apocalyptic number.

212011301023 is a deficient number, since it is larger than the sum of its proper divisors (20480697).

212011301023 is a wasteful number, since it uses less digits than its factorization.

212011301023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20480696.

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

Adding to 212011301023 its reverse (320103110212), we get a palindrome (532114411235).

The spelling of 212011301023 in words is "two hundred twelve billion, eleven million, three hundred one thousand, twenty-three".