201033420121 has 4 divisors (see below), whose sum is σ = 201679830144. Its totient is φ = 200387010100.

The previous prime is 201033420073. The next prime is 201033420127. The reversal of 201033420121 is 121024330102.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 201033420121 - 2³³ = 192443485529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201033420127) 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, 323204545 + ... + 323205166.

It is an arithmetic number, because the mean of its divisors is an integer number (50419957536).

Almost surely, 2^201033420121 is an apocalyptic number.

It is an amenable number.

201033420121 is a deficient number, since it is larger than the sum of its proper divisors (646410023).

201033420121 is an equidigital number, since it uses as much as digits as its factorization.

201033420121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646410022.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 201033420121 its reverse (121024330102), we get a palindrome (322057750223).

The spelling of 201033420121 in words is "two hundred one billion, thirty-three million, four hundred twenty thousand, one hundred twenty-one".