121505445002 has 16 divisors (see below), whose sum is σ = 187194948072. Its totient is φ = 59107320000.

The previous prime is 121505444933. The next prime is 121505445007. The reversal of 121505445002 is 200544505121.

It can be written as a sum of positive squares in 4 ways, for example, as 118362833521 + 3142611481 = 344039^2 + 56059^2 .

It is not an unprimeable number, because it can be changed into a prime (121505445007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1628588 + ... + 1701560.

Almost surely, 2^121505445002 is an apocalyptic number.

121505445002 is a deficient number, since it is larger than the sum of its proper divisors (65689503070).

121505445002 is a wasteful number, since it uses less digits than its factorization.

121505445002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95513.

The product of its (nonzero) digits is 8000, while the sum is 29.

The spelling of 121505445002 in words is "one hundred twenty-one billion, five hundred five million, four hundred forty-five thousand, two".