120554134021 has 2 divisors, whose sum is σ = 120554134022. Its totient is φ = 120554134020.

The previous prime is 120554134007. The next prime is 120554134031. The reversal of 120554134021 is 120431455021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106181481025 + 14372652996 = 325855^2 + 119886^2 .

It is a cyclic number.

It is not a de Polignac number, because 120554134021 - 2⁷ = 120554133893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120554134031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60277067010 + 60277067011.

It is an arithmetic number, because the mean of its divisors is an integer number (60277067011).

Almost surely, 2^120554134021 is an apocalyptic number.

It is an amenable number.

120554134021 is a deficient number, since it is larger than the sum of its proper divisors (1).

120554134021 is an equidigital number, since it uses as much as digits as its factorization.

120554134021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 120554134021 its reverse (120431455021), we get a palindrome (240985589042).

The spelling of 120554134021 in words is "one hundred twenty billion, five hundred fifty-four million, one hundred thirty-four thousand, twenty-one".