201121255 has 8 divisors (see below), whose sum is σ = 243834192. Its totient is φ = 159237888.

The previous prime is 201121253. The next prime is 201121259. The reversal of 201121255 is 552121102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201121255 - 2¹ = 201121253 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 (201121253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206857 + ... + 207826.

It is an arithmetic number, because the mean of its divisors is an integer number (30479274).

Almost surely, 2^201121255 is an apocalyptic number.

201121255 is a deficient number, since it is larger than the sum of its proper divisors (42712937).

201121255 is an equidigital number, since it uses as much as digits as its factorization.

201121255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414785.

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

The square root of 201121255 is about 14181.7225681509. The cubic root of 201121255 is about 585.8943681981.

Adding to 201121255 its reverse (552121102), we get a palindrome (753242357).

The spelling of 201121255 in words is "two hundred one million, one hundred twenty-one thousand, two hundred fifty-five".