201121092 has 36 divisors (see below), whose sum is σ = 510649776. Its totient is φ = 66742320.

The previous prime is 201121073. The next prime is 201121093. The reversal of 201121092 is 290121102.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (201121093) 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 11 ways as a sum of consecutive naturals, for example, 4134 + ... + 20477.

It is an arithmetic number, because the mean of its divisors is an integer number (14184716).

Almost surely, 2^201121092 is an apocalyptic number.

It is an amenable number.

201121092 is an abundant number, since it is smaller than the sum of its proper divisors (309528684).

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

201121092 is a wasteful number, since it uses less digits than its factorization.

201121092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24848 (or 24843 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 201121092 is about 14181.7168213161. The cubic root of 201121092 is about 585.8942099175.

Adding to 201121092 its reverse (290121102), we get a palindrome (491242194).

The spelling of 201121092 in words is "two hundred one million, one hundred twenty-one thousand, ninety-two".