201430111121 has 4 divisors (see below), whose sum is σ = 203312635632. Its totient is φ = 199547586612.

The previous prime is 201430111111. The next prime is 201430111163. The reversal of 201430111121 is 121111034102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 201430111121 - 2²⁶ = 201363002257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201430111121.

It is not an unprimeable number, because it can be changed into a prime (201430111111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 941262095 + ... + 941262308.

It is an arithmetic number, because the mean of its divisors is an integer number (50828158908).

Almost surely, 2^201430111121 is an apocalyptic number.

It is an amenable number.

201430111121 is a deficient number, since it is larger than the sum of its proper divisors (1882524511).

201430111121 is a wasteful number, since it uses less digits than its factorization.

201430111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1882524510.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 201430111121 its reverse (121111034102), we get a palindrome (322541145223).

The spelling of 201430111121 in words is "two hundred one billion, four hundred thirty million, one hundred eleven thousand, one hundred twenty-one".