123001321355 has 32 divisors (see below), whose sum is σ = 162094867200. Its totient is φ = 88860240000.

The previous prime is 123001321321. The next prime is 123001321441. The reversal of 123001321355 is 553123100321.

It is not a de Polignac number, because 123001321355 - 2¹⁴ = 123001304971 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5220341 + ... + 5243849.

It is an arithmetic number, because the mean of its divisors is an integer number (5065464600).

Almost surely, 2^123001321355 is an apocalyptic number.

123001321355 is a deficient number, since it is larger than the sum of its proper divisors (39093545845).

123001321355 is a wasteful number, since it uses less digits than its factorization.

123001321355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24155.

The product of its (nonzero) digits is 2700, while the sum is 26.

Adding to 123001321355 its reverse (553123100321), we get a palindrome (676124421676).

The spelling of 123001321355 in words is "one hundred twenty-three billion, one million, three hundred twenty-one thousand, three hundred fifty-five".