123345326221 has 16 divisors (see below), whose sum is σ = 140035811328. Its totient is φ = 107840044800.

The previous prime is 123345326183. The next prime is 123345326239. The reversal of 123345326221 is 122623543321.

It is a cyclic number.

It is not a de Polignac number, because 123345326221 - 2¹³ = 123345318029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123345326281) 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, 3237100 + ... + 3274981.

It is an arithmetic number, because the mean of its divisors is an integer number (8752238208).

Almost surely, 2^123345326221 is an apocalyptic number.

It is an amenable number.

123345326221 is a deficient number, since it is larger than the sum of its proper divisors (16690485107).

123345326221 is a wasteful number, since it uses less digits than its factorization.

123345326221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6512172.

The product of its digits is 51840, while the sum is 34.

Adding to 123345326221 its reverse (122623543321), we get a palindrome (245968869542).

The spelling of 123345326221 in words is "one hundred twenty-three billion, three hundred forty-five million, three hundred twenty-six thousand, two hundred twenty-one".