122220120121 has 8 divisors (see below), whose sum is σ = 133757021664. Its totient is φ = 110754215520.

The previous prime is 122220120107. The next prime is 122220120137. The reversal of 122220120121 is 121021022221.

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 not a de Polignac number, because 122220120121 - 2¹³ = 122220111929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122220120095 and 122220120104.

It is not an unprimeable number, because it can be changed into a prime (122220120101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17745631 + ... + 17752516.

It is an arithmetic number, because the mean of its divisors is an integer number (16719627708).

Almost surely, 2^122220120121 is an apocalyptic number.

122220120121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122220120121 is a deficient number, since it is larger than the sum of its proper divisors (11536901543).

122220120121 is a wasteful number, since it uses less digits than its factorization.

122220120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35498471.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 122220120121 its reverse (121021022221), we get a palindrome (243241142342).

The spelling of 122220120121 in words is "one hundred twenty-two billion, two hundred twenty million, one hundred twenty thousand, one hundred twenty-one".