201021114 has 64 divisors (see below), whose sum is σ = 475517952. Its totient is φ = 55459200.

The previous prime is 201021113. The next prime is 201021133. The reversal of 201021114 is 411120102.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 201021114.

It is not an unprimeable number, because it can be changed into a prime (201021113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 183709 + ... + 184799.

It is an arithmetic number, because the mean of its divisors is an integer number (7429968).

Almost surely, 2^201021114 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201021114, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237758976).

201021114 is an abundant number, since it is smaller than the sum of its proper divisors (274496838).

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

201021114 is a wasteful number, since it uses less digits than its factorization.

201021114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 201021114 is about 14178.1914925706. The cubic root of 201021114 is about 585.7971104709.

Adding to 201021114 its reverse (411120102), we get a palindrome (612141216).

The spelling of 201021114 in words is "two hundred one million, twenty-one thousand, one hundred fourteen".