122012211005 has 4 divisors (see below), whose sum is σ = 146414653212. Its totient is φ = 97609768800.

The previous prime is 122012210987. The next prime is 122012211071. The reversal of 122012211005 is 500112210221.

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 22889874436 + 99122336569 = 151294^2 + 314837^2 .

It is not a de Polignac number, because 122012211005 - 2²² = 122008016701 is a prime.

It is a super-2 number, since 2×122012211005² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent 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, 12201221096 + ... + 12201221105.

It is an arithmetic number, because the mean of its divisors is an integer number (36603663303).

Almost surely, 2^122012211005 is an apocalyptic number.

It is an amenable number.

122012211005 is a deficient number, since it is larger than the sum of its proper divisors (24402442207).

122012211005 is an equidigital number, since it uses as much as digits as its factorization.

122012211005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24402442206.

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 122012211005 its reverse (500112210221), we get a palindrome (622124421226).

The spelling of 122012211005 in words is "one hundred twenty-two billion, twelve million, two hundred eleven thousand, five".