221212412023 has 8 divisors (see below), whose sum is σ = 222143031936. Its totient is φ = 220282809600.

The previous prime is 221212412017. The next prime is 221212412033. The reversal of 221212412023 is 320214212122.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221212412023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221212411985 and 221212412003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221212412033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182938 + ... + 689848.

It is an arithmetic number, because the mean of its divisors is an integer number (27767878992).

Almost surely, 2^221212412023 is an apocalyptic number.

221212412023 is a deficient number, since it is larger than the sum of its proper divisors (930619913).

221212412023 is a wasteful number, since it uses less digits than its factorization.

221212412023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508745.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 221212412023 its reverse (320214212122), we get a palindrome (541426624145).

The spelling of 221212412023 in words is "two hundred twenty-one billion, two hundred twelve million, four hundred twelve thousand, twenty-three".