122040215105 has 4 divisors (see below), whose sum is σ = 146448258132. Its totient is φ = 97632172080.

The previous prime is 122040215057. The next prime is 122040215113. The reversal of 122040215105 is 501512040221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 501512040221 = 41 ⋅12232000981.

It can be written as a sum of positive squares in 2 ways, for example, as 69796884481 + 52243330624 = 264191^2 + 228568^2 .

It is not a de Polignac number, because 122040215105 - 2⁶ = 122040215041 is a prime.

It is a super-2 number, since 2×122040215105² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12204021506 + ... + 12204021515.

It is an arithmetic number, because the mean of its divisors is an integer number (36612064533).

Almost surely, 2^122040215105 is an apocalyptic number.

It is an amenable number.

122040215105 is a deficient number, since it is larger than the sum of its proper divisors (24408043027).

122040215105 is an equidigital number, since it uses as much as digits as its factorization.

122040215105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24408043026.

The product of its (nonzero) digits is 800, while the sum is 23.

Adding to 122040215105 its reverse (501512040221), we get a palindrome (623552255326).

The spelling of 122040215105 in words is "one hundred twenty-two billion, forty million, two hundred fifteen thousand, one hundred five".