124005201212105 has 4 divisors (see below), whose sum is σ = 148806241454532. Its totient is φ = 99204160969680.

The previous prime is 124005201212089. The next prime is 124005201212117. The reversal of 124005201212105 is 501212102500421.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51995449159369 + 72009752052736 = 7210787^2 + 8485856^2 .

It is not a de Polignac number, because 124005201212105 - 2⁴ = 124005201212089 is a prime.

It is a super-2 number, since 2×124005201212105² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12400520121206 + ... + 12400520121215.

It is an arithmetic number, because the mean of its divisors is an integer number (37201560363633).

Almost surely, 2^{124005201212105} is an apocalyptic number.

It is an amenable number.

124005201212105 is a deficient number, since it is larger than the sum of its proper divisors (24801040242427).

124005201212105 is an equidigital number, since it uses as much as digits as its factorization.

124005201212105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24801040242426.

The product of its (nonzero) digits is 1600, while the sum is 26.

Adding to 124005201212105 its reverse (501212102500421), we get a palindrome (625217303712526).

The spelling of 124005201212105 in words is "one hundred twenty-four trillion, five billion, two hundred one million, two hundred twelve thousand, one hundred five".