122001112021 has 4 divisors (see below), whose sum is σ = 128422223200. Its totient is φ = 115580000844.

The previous prime is 122001112007. The next prime is 122001112043. The reversal of 122001112021 is 120211100221.

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, and also an emirpimes, since its reverse is a distinct semiprime: 120211100221 = 97 ⋅1239289693.

It is a cyclic number.

It is not a de Polignac number, because 122001112021 - 2⁹ = 122001111509 is a prime.

It is a super-4 number, since 4×122001112021⁴ (a number of 45 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122001111992 and 122001112010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122001112921) 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, 3210555561 + ... + 3210555598.

It is an arithmetic number, because the mean of its divisors is an integer number (32105555800).

Almost surely, 2^122001112021 is an apocalyptic number.

It is an amenable number.

122001112021 is a deficient number, since it is larger than the sum of its proper divisors (6421111179).

122001112021 is an equidigital number, since it uses as much as digits as its factorization.

122001112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6421111178.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 122001112021 its reverse (120211100221), we get a palindrome (242212212242).

The spelling of 122001112021 in words is "one hundred twenty-two billion, one million, one hundred twelve thousand, twenty-one".