212331103023221 has 24 divisors (see below), whose sum is σ = 268877318909760. Its totient is φ = 164091299613696.

The previous prime is 212331103023217. The next prime is 212331103023227. The reversal of 212331103023221 is 122320301133212.

It is not a de Polignac number, because 212331103023221 - 2² = 212331103023217 is a prime.

It is a super-2 number, since 2×212331103023221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212331103023227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2086987436 + ... + 2087089173.

It is an arithmetic number, because the mean of its divisors is an integer number (11203221621240).

Almost surely, 2^{212331103023221} is an apocalyptic number.

It is an amenable number.

212331103023221 is a deficient number, since it is larger than the sum of its proper divisors (56546215886539).

212331103023221 is a wasteful number, since it uses less digits than its factorization.

212331103023221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4174076685 (or 4174076672 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 212331103023221 its reverse (122320301133212), we get a palindrome (334651404156433).

The spelling of 212331103023221 in words is "two hundred twelve trillion, three hundred thirty-one billion, one hundred three million, twenty-three thousand, two hundred twenty-one".