122311105550021 has 4 divisors (see below), whose sum is σ = 122314810520652. Its totient is φ = 122307400579392.

The previous prime is 122311105550003. The next prime is 122311105550041. The reversal of 122311105550021 is 120055501113221.

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 64333008057796 + 57978097492225 = 8020786^2 + 7614335^2 .

It is a cyclic number.

It is not a de Polignac number, because 122311105550021 - 2⁴⁶ = 51942361372357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122311105550041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1852435796 + ... + 1852501821.

It is an arithmetic number, because the mean of its divisors is an integer number (30578702630163).

Almost surely, 2^{122311105550021} is an apocalyptic number.

It is an amenable number.

122311105550021 is a deficient number, since it is larger than the sum of its proper divisors (3704970631).

122311105550021 is an equidigital number, since it uses as much as digits as its factorization.

122311105550021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3704970630.

The product of its (nonzero) digits is 3000, while the sum is 29.

Adding to 122311105550021 its reverse (120055501113221), we get a palindrome (242366606663242).

The spelling of 122311105550021 in words is "one hundred twenty-two trillion, three hundred eleven billion, one hundred five million, five hundred fifty thousand, twenty-one".