321212212123 has 4 divisors (see below), whose sum is σ = 350413322328. Its totient is φ = 292011101920.

The previous prime is 321212212103. The next prime is 321212212127.

321212212123 is nontrivially palindromic in base 10.

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 321212212123 - 2²⁹ = 320675341211 is a prime.

It is a super-2 number, since 2×321212212123² (a number of 24 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 = 321212212094 and 321212212103.

It is not an unprimeable number, because it can be changed into a prime (321212212127) 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, 14600555086 + ... + 14600555107.

It is an arithmetic number, because the mean of its divisors is an integer number (87603330582).

Almost surely, 2^321212212123 is an apocalyptic number.

321212212123 is a deficient number, since it is larger than the sum of its proper divisors (29201110205).

321212212123 is a wasteful number, since it uses less digits than its factorization.

321212212123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29201110204.

The product of its digits is 576, while the sum is 22.

It can be divided in two parts, 321212 and 212123, that added together give a palindrome (533335).

The spelling of 321212212123 in words is "three hundred twenty-one billion, two hundred twelve million, two hundred twelve thousand, one hundred twenty-three".