212311122023 has 32 divisors (see below), whose sum is σ = 286810148352. Its totient is φ = 151774300800.

The previous prime is 212311122019. The next prime is 212311122053. The reversal of 212311122023 is 320221113212.

It is a cyclic number.

It is not a de Polignac number, because 212311122023 - 2² = 212311122019 is a prime.

It is a super-2 number, since 2×212311122023² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212311121986 and 212311122004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212311122013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 487448 + ... + 813773.

It is an arithmetic number, because the mean of its divisors is an integer number (8962817136).

Almost surely, 2^212311122023 is an apocalyptic number.

212311122023 is a deficient number, since it is larger than the sum of its proper divisors (74499026329).

212311122023 is a wasteful number, since it uses less digits than its factorization.

212311122023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1301415.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 212311122023 its reverse (320221113212), we get a palindrome (532532235235).

The spelling of 212311122023 in words is "two hundred twelve billion, three hundred eleven million, one hundred twenty-two thousand, twenty-three".