122311211221020 has 48 divisors (see below), whose sum is σ = 357361451919360. Its totient is φ = 31198221992256.

The previous prime is 122311211221007. The next prime is 122311211221021. The reversal of 122311211221020 is 20122112113221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122311211221021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44315654860 + ... + 44315657619.

It is an arithmetic number, because the mean of its divisors is an integer number (7445030248320).

Almost surely, 2^{122311211221020} is an apocalyptic number.

122311211221020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122311211221020 is an abundant number, since it is smaller than the sum of its proper divisors (235050240698340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122311211221020 is a wasteful number, since it uses less digits than its factorization.

122311211221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88631312514 (or 88631312512 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 122311211221020 its reverse (20122112113221), we get a palindrome (142433323334241).

The spelling of 122311211221020 in words is "one hundred twenty-two trillion, three hundred eleven billion, two hundred eleven million, two hundred twenty-one thousand, twenty".