3123122123221 has 16 divisors (see below), whose sum is σ = 3224263933440. Its totient is φ = 3022865334720.

The previous prime is 3123122123197. The next prime is 3123122123249. The reversal of 3123122123221 is 1223212213213.

It is a cyclic number.

It is not a de Polignac number, because 3123122123221 - 2¹⁷ = 3123121992149 is a prime.

It is a super-3 number, since 3×3123122123221³ (a number of 38 digits) contains 333 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 (3123122123521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60407260 + ... + 60458938.

It is an arithmetic number, because the mean of its divisors is an integer number (201516495840).

Almost surely, 2^{3123122123221} is an apocalyptic number.

It is an amenable number.

3123122123221 is a deficient number, since it is larger than the sum of its proper divisors (101141810219).

3123122123221 is a wasteful number, since it uses less digits than its factorization.

3123122123221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60204.

The product of its digits is 1728, while the sum is 25.

Adding to 3123122123221 its reverse (1223212213213), we get a palindrome (4346334336434).

The spelling of 3123122123221 in words is "three trillion, one hundred twenty-three billion, one hundred twenty-two million, one hundred twenty-three thousand, two hundred twenty-one".