121357501 has 2 divisors, whose sum is σ = 121357502. Its totient is φ = 121357500.

The previous prime is 121357493. The next prime is 121357519. The reversal of 121357501 is 105753121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106069401 + 15288100 = 10299^2 + 3910^2 .

It is a cyclic number.

It is not a de Polignac number, because 121357501 - 2³ = 121357493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121357571) 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, 60678750 + 60678751.

It is an arithmetic number, because the mean of its divisors is an integer number (60678751).

Almost surely, 2^121357501 is an apocalyptic number.

It is an amenable number.

121357501 is a deficient number, since it is larger than the sum of its proper divisors (1).

121357501 is an equidigital number, since it uses as much as digits as its factorization.

121357501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1050, while the sum is 25.

The square root of 121357501 is about 11016.2380602454. The cubic root of 121357501 is about 495.0953814089.

The spelling of 121357501 in words is "one hundred twenty-one million, three hundred fifty-seven thousand, five hundred one".