122120012021 has 16 divisors (see below), whose sum is σ = 141591600000. Its totient is φ = 103157203968.

The previous prime is 122120011903. The next prime is 122120012029. The reversal of 122120012021 is 120210021221.

It is not a de Polignac number, because 122120012021 - 2¹⁰ = 122120010997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122120011987 and 122120012005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122120012029) 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, 542570 + ... + 733908.

It is an arithmetic number, because the mean of its divisors is an integer number (8849475000).

Almost surely, 2^122120012021 is an apocalyptic number.

It is an amenable number.

122120012021 is a deficient number, since it is larger than the sum of its proper divisors (19471587979).

122120012021 is a wasteful number, since it uses less digits than its factorization.

122120012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192668.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 122120012021 its reverse (120210021221), we get a palindrome (242330033242).

The spelling of 122120012021 in words is "one hundred twenty-two billion, one hundred twenty million, twelve thousand, twenty-one".