201113022421 has 4 divisors (see below), whose sum is σ = 201174509344. Its totient is φ = 201051535500.

The previous prime is 201113022401. The next prime is 201113022433. The reversal of 201113022421 is 124220311102.

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 a de Polignac number, because none of the positive numbers 2^k-201113022421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201113022401) 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, 30738555 + ... + 30745096.

It is an arithmetic number, because the mean of its divisors is an integer number (50293627336).

Almost surely, 2^201113022421 is an apocalyptic number.

It is an amenable number.

201113022421 is a deficient number, since it is larger than the sum of its proper divisors (61486923).

201113022421 is an equidigital number, since it uses as much as digits as its factorization.

201113022421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61486922.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 201113022421 its reverse (124220311102), we get a palindrome (325333333523).

The spelling of 201113022421 in words is "two hundred one billion, one hundred thirteen million, twenty-two thousand, four hundred twenty-one".