201103420321 has 4 divisors (see below), whose sum is σ = 204897824532. Its totient is φ = 197309016112.

The previous prime is 201103420313. The next prime is 201103420327. The reversal of 201103420321 is 123024301102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 118483966225 + 82619454096 = 344215^2 + 287436^2 .

It is a cyclic number.

It is not a de Polignac number, because 201103420321 - 2³ = 201103420313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201103420327) 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, 1897202026 + ... + 1897202131.

It is an arithmetic number, because the mean of its divisors is an integer number (51224456133).

Almost surely, 2^201103420321 is an apocalyptic number.

It is an amenable number.

201103420321 is a deficient number, since it is larger than the sum of its proper divisors (3794404211).

201103420321 is an equidigital number, since it uses as much as digits as its factorization.

201103420321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3794404210.

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

Adding to 201103420321 its reverse (123024301102), we get a palindrome (324127721423).

The spelling of 201103420321 in words is "two hundred one billion, one hundred three million, four hundred twenty thousand, three hundred twenty-one".