122505311101 has 4 divisors (see below), whose sum is σ = 123316604704. Its totient is φ = 121694017500.

The previous prime is 122505311083. The next prime is 122505311111. The reversal of 122505311101 is 101113505221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 122505311101 - 2⁹ = 122505310589 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 (122505311111) 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, 405646575 + ... + 405646876.

It is an arithmetic number, because the mean of its divisors is an integer number (30829151176).

Almost surely, 2^122505311101 is an apocalyptic number.

It is an amenable number.

122505311101 is a deficient number, since it is larger than the sum of its proper divisors (811293603).

122505311101 is an equidigital number, since it uses as much as digits as its factorization.

122505311101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811293602.

The product of its (nonzero) digits is 300, while the sum is 22.

Adding to 122505311101 its reverse (101113505221), we get a palindrome (223618816322).

The spelling of 122505311101 in words is "one hundred twenty-two billion, five hundred five million, three hundred eleven thousand, one hundred one".