122112021121021 has 8 divisors (see below), whose sum is σ = 122163196276800. Its totient is φ = 122060855700480.

The previous prime is 122112021121009. The next prime is 122112021121067. The reversal of 122112021121021 is 120121120211221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122112021121021 is a prime.

It is a super-2 number, since 2×122112021121021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122112021121021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122112021121621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22712445 + ... + 27569533.

It is an arithmetic number, because the mean of its divisors is an integer number (15270399534600).

Almost surely, 2^{122112021121021} is an apocalyptic number.

It is an amenable number.

122112021121021 is a deficient number, since it is larger than the sum of its proper divisors (51175155779).

122112021121021 is an equidigital number, since it uses as much as digits as its factorization.

122112021121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4867619.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 122112021121021 its reverse (120121120211221), we get a palindrome (242233141332242).

The spelling of 122112021121021 in words is "one hundred twenty-two trillion, one hundred twelve billion, twenty-one million, one hundred twenty-one thousand, twenty-one".