120221220121 has 8 divisors (see below), whose sum is σ = 123289264224. Its totient is φ = 117159643680.

The previous prime is 120221220113. The next prime is 120221220137. The reversal of 120221220121 is 121022122021.

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 120221220121 - 2³ = 120221220113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120221220095 and 120221220104.

It is not an unprimeable number, because it can be changed into a prime (120221520121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1579255 + ... + 1653628.

It is an arithmetic number, because the mean of its divisors is an integer number (15411158028).

Almost surely, 2^120221220121 is an apocalyptic number.

It is an amenable number.

120221220121 is a deficient number, since it is larger than the sum of its proper divisors (3068044103).

120221220121 is an equidigital number, since it uses as much as digits as its factorization.

120221220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3233831.

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

Adding to 120221220121 its reverse (121022122021), we get a palindrome (241243342142).

The spelling of 120221220121 in words is "one hundred twenty billion, two hundred twenty-one million, two hundred twenty thousand, one hundred twenty-one".