121455101 has 4 divisors (see below), whose sum is σ = 121533600. Its totient is φ = 121376604.

The previous prime is 121455077. The next prime is 121455107. The reversal of 121455101 is 101554121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 101554121 = 5651 ⋅17971.

It is a cyclic number.

It is not a de Polignac number, because 121455101 - 2¹⁴ = 121438717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121455107) 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 3 ways as a sum of consecutive naturals, for example, 36881 + ... + 40038.

It is an arithmetic number, because the mean of its divisors is an integer number (30383400).

Almost surely, 2^121455101 is an apocalyptic number.

It is an amenable number.

121455101 is a deficient number, since it is larger than the sum of its proper divisors (78499).

121455101 is an equidigital number, since it uses as much as digits as its factorization.

121455101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78498.

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 121455101 is about 11020.6669943339. Note that the first 3 decimals coincide. The cubic root of 121455101 is about 495.2280702572.

The spelling of 121455101 in words is "one hundred twenty-one million, four hundred fifty-five thousand, one hundred one".