120121500545 has 16 divisors (see below), whose sum is σ = 145680337488. Its totient is φ = 95074836480.

The previous prime is 120121500497. The next prime is 120121500553. The reversal of 120121500545 is 545005121021.

It can be written as a sum of positive squares in 8 ways, for example, as 24598471921 + 95523028624 = 156839^2 + 309068^2 .

It is not a de Polignac number, because 120121500545 - 2²² = 120117306241 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1474007 + ... + 1553363.

It is an arithmetic number, because the mean of its divisors is an integer number (9105021093).

Almost surely, 2^120121500545 is an apocalyptic number.

It is an amenable number.

120121500545 is a deficient number, since it is larger than the sum of its proper divisors (25558836943).

120121500545 is an equidigital number, since it uses as much as digits as its factorization.

120121500545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82580.

The product of its (nonzero) digits is 2000, while the sum is 26.

Adding to 120121500545 its reverse (545005121021), we get a palindrome (665126621566).

The spelling of 120121500545 in words is "one hundred twenty billion, one hundred twenty-one million, five hundred thousand, five hundred forty-five".