121552201 has 4 divisors (see below), whose sum is σ = 121574272. Its totient is φ = 121530132.

The previous prime is 121552183. The next prime is 121552241. The reversal of 121552201 is 102255121.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 102255121 = 457 ⋅223753.

It is a cyclic number.

It is not a de Polignac number, because 121552201 - 2⁷ = 121552073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121552241) 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, 4816 + ... + 16318.

It is an arithmetic number, because the mean of its divisors is an integer number (30393568).

Almost surely, 2^121552201 is an apocalyptic number.

It is an amenable number.

121552201 is a deficient number, since it is larger than the sum of its proper divisors (22071).

121552201 is a wasteful number, since it uses less digits than its factorization.

121552201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22070.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 121552201 is about 11025.0714736912. The cubic root of 121552201 is about 495.3600088262.

The spelling of 121552201 in words is "one hundred twenty-one million, five hundred fifty-two thousand, two hundred one".