122502111221 has 4 divisors (see below), whose sum is σ = 140002412832. Its totient is φ = 105001809612.

The previous prime is 122502111209. The next prime is 122502111229. The reversal of 122502111221 is 122111205221.

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 not a de Polignac number, because 122502111221 - 2⁶ = 122502111157 is a prime.

It is a super-2 number, since 2×122502111221² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122502111193 and 122502111202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122502111229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8750150795 + ... + 8750150808.

It is an arithmetic number, because the mean of its divisors is an integer number (35000603208).

Almost surely, 2^122502111221 is an apocalyptic number.

It is an amenable number.

122502111221 is a deficient number, since it is larger than the sum of its proper divisors (17500301611).

122502111221 is an equidigital number, since it uses as much as digits as its factorization.

122502111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17500301610.

The product of its (nonzero) digits is 160, while the sum is 20.

Adding to 122502111221 its reverse (122111205221), we get a palindrome (244613316442).

The spelling of 122502111221 in words is "one hundred twenty-two billion, five hundred two million, one hundred eleven thousand, two hundred twenty-one".