201121030 has 16 divisors (see below), whose sum is σ = 394928784. Its totient is φ = 73134880.

The previous prime is 201121027. The next prime is 201121051. The reversal of 201121030 is 30121102.

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 = 201120998 and 201121016.

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, 914077 + ... + 914296.

It is an arithmetic number, because the mean of its divisors is an integer number (24683049).

Almost surely, 2^201121030 is an apocalyptic number.

201121030 is a deficient number, since it is larger than the sum of its proper divisors (193807754).

201121030 is a wasteful number, since it uses less digits than its factorization.

201121030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1828391.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 201121030 is about 14181.7146354029. The cubic root of 201121030 is about 585.8941497125.

Adding to 201121030 its reverse (30121102), we get a palindrome (231242132).

The spelling of 201121030 in words is "two hundred one million, one hundred twenty-one thousand, thirty".