121502555201 has 2 divisors, whose sum is σ = 121502555202. Its totient is φ = 121502555200.

The previous prime is 121502555183. The next prime is 121502555267. The reversal of 121502555201 is 102555205121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63252250000 + 58250305201 = 251500^2 + 241351^2 .

It is an emirp because it is prime and its reverse (102555205121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121502555201 - 2¹⁸ = 121502293057 is a prime.

It is not a weakly prime, because it can be changed into another prime (121502555281) 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 as a sum of consecutive naturals, namely, 60751277600 + 60751277601.

It is an arithmetic number, because the mean of its divisors is an integer number (60751277601).

Almost surely, 2^121502555201 is an apocalyptic number.

It is an amenable number.

121502555201 is a deficient number, since it is larger than the sum of its proper divisors (1).

121502555201 is an equidigital number, since it uses as much as digits as its factorization.

121502555201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5000, while the sum is 29.

The spelling of 121502555201 in words is "one hundred twenty-one billion, five hundred two million, five hundred fifty-five thousand, two hundred one".