120221122121 has 8 divisors (see below), whose sum is σ = 127727405064. Its totient is φ = 112763111680.

The previous prime is 120221122093. The next prime is 120221122159. The reversal of 120221122121 is 121221122021.

It can be written as a sum of positive squares in 4 ways, for example, as 51872340025 + 68348782096 = 227755^2 + 261436^2 .

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-120221122121 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 120221122121.

It is not an unprimeable number, because it can be changed into a prime (120221122421) 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, 12062990 + ... + 12072951.

It is an arithmetic number, because the mean of its divisors is an integer number (15965925633).

Almost surely, 2^120221122121 is an apocalyptic number.

It is an amenable number.

120221122121 is a deficient number, since it is larger than the sum of its proper divisors (7506282943).

120221122121 is a wasteful number, since it uses less digits than its factorization.

120221122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24136251.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 120221122121 its reverse (121221122021), we get a palindrome (241442244142).

The spelling of 120221122121 in words is "one hundred twenty billion, two hundred twenty-one million, one hundred twenty-two thousand, one hundred twenty-one".