122131231221113 has 4 divisors (see below), whose sum is σ = 122146065582708. Its totient is φ = 122116396859520.

The previous prime is 122131231221089. The next prime is 122131231221191. The reversal of 122131231221113 is 311122132131221.

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 34591948146064 + 87539283075049 = 5881492^2 + 9356243^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122131231221113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122131231221613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7417168448 + ... + 7417184913.

It is an arithmetic number, because the mean of its divisors is an integer number (30536516395677).

Almost surely, 2^{122131231221113} is an apocalyptic number.

It is an amenable number.

122131231221113 is a deficient number, since it is larger than the sum of its proper divisors (14834361595).

122131231221113 is an equidigital number, since it uses as much as digits as its factorization.

122131231221113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14834361594.

The product of its digits is 864, while the sum is 26.

Adding to 122131231221113 its reverse (311122132131221), we get a palindrome (433253363352334).

The spelling of 122131231221113 in words is "one hundred twenty-two trillion, one hundred thirty-one billion, two hundred thirty-one million, two hundred twenty-one thousand, one hundred thirteen".