120021133121 has 2 divisors, whose sum is σ = 120021133122. Its totient is φ = 120021133120.

The previous prime is 120021133081. The next prime is 120021133139. The reversal of 120021133121 is 121331120021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104645133121 + 15376000000 = 323489^2 + 124000^2 .

It is an emirp because it is prime and its reverse (121331120021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120021133121 - 2²² = 120016938817 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120021133121.

It is not a weakly prime, because it can be changed into another prime (120021133181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60010566560 + 60010566561.

It is an arithmetic number, because the mean of its divisors is an integer number (60010566561).

Almost surely, 2^120021133121 is an apocalyptic number.

It is an amenable number.

120021133121 is a deficient number, since it is larger than the sum of its proper divisors (1).

120021133121 is an equidigital number, since it uses as much as digits as its factorization.

120021133121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 120021133121 its reverse (121331120021), we get a palindrome (241352253142).

The spelling of 120021133121 in words is "one hundred twenty billion, twenty-one million, one hundred thirty-three thousand, one hundred twenty-one".