120453607721 has 2 divisors, whose sum is σ = 120453607722. Its totient is φ = 120453607720.

The previous prime is 120453607693. The next prime is 120453607783. The reversal of 120453607721 is 127706354021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96186199321 + 24267408400 = 310139^2 + 155780^2 .

It is a cyclic number.

It is not a de Polignac number, because 120453607721 - 2¹⁴ = 120453591337 is a prime.

It is a super-3 number, since 3×120453607721³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (120453607121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60226803860 + 60226803861.

It is an arithmetic number, because the mean of its divisors is an integer number (60226803861).

Almost surely, 2^120453607721 is an apocalyptic number.

It is an amenable number.

120453607721 is a deficient number, since it is larger than the sum of its proper divisors (1).

120453607721 is an equidigital number, since it uses as much as digits as its factorization.

120453607721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70560, while the sum is 38.

The spelling of 120453607721 in words is "one hundred twenty billion, four hundred fifty-three million, six hundred seven thousand, seven hundred twenty-one".