345123300121 has 32 divisors (see below), whose sum is σ = 358497239040. Its totient is φ = 332108515200.

The previous prime is 345123300107. The next prime is 345123300257. The reversal of 345123300121 is 121003321543.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 345123300121 - 2²³ = 345114911513 is a prime.

It is a super-2 number, since 2×345123300121² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345123301121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 234617416 + ... + 234618886.

It is an arithmetic number, because the mean of its divisors is an integer number (11203038720).

Almost surely, 2^345123300121 is an apocalyptic number.

It is an amenable number.

345123300121 is a deficient number, since it is larger than the sum of its proper divisors (13373938919).

345123300121 is a wasteful number, since it uses less digits than its factorization.

345123300121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2085.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 345123300121 its reverse (121003321543), we get a palindrome (466126621664).

The spelling of 345123300121 in words is "three hundred forty-five billion, one hundred twenty-three million, three hundred thousand, one hundred twenty-one".