123202545105 has 16 divisors (see below), whose sum is σ = 198333426240. Its totient is φ = 65304906048.

The previous prime is 123202545083. The next prime is 123202545113. The reversal of 123202545105 is 501545202321.

It is not a de Polignac number, because 123202545105 - 2⁶ = 123202545041 is a prime.

It is a super-2 number, since 2×123202545105² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25192350 + ... + 25197239.

It is an arithmetic number, because the mean of its divisors is an integer number (12395839140).

Almost surely, 2^123202545105 is an apocalyptic number.

123202545105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123202545105 is a deficient number, since it is larger than the sum of its proper divisors (75130881135).

123202545105 is a wasteful number, since it uses less digits than its factorization.

123202545105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50389760.

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 123202545105 its reverse (501545202321), we get a palindrome (624747747426).

The spelling of 123202545105 in words is "one hundred twenty-three billion, two hundred two million, five hundred forty-five thousand, one hundred five".