201121120 has 48 divisors (see below), whose sum is σ = 476007840. Its totient is φ = 80303104.

The previous prime is 201121117. The next prime is 201121133. The reversal of 201121120 is 21121102.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 201121097 and 201121106.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 151821 + ... + 153139.

It is an arithmetic number, because the mean of its divisors is an integer number (9916830).

Almost surely, 2^201121120 is an apocalyptic number.

201121120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201121120 is an abundant number, since it is smaller than the sum of its proper divisors (274886720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201121120 is a wasteful number, since it uses less digits than its factorization.

201121120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2287 (or 2279 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 201121120 is about 14181.7178085026. The cubic root of 201121120 is about 585.8942371068.

Adding to 201121120 its reverse (21121102), we get a palindrome (222242222).

The spelling of 201121120 in words is "two hundred one million, one hundred twenty-one thousand, one hundred twenty".