203112140221 has 4 divisors (see below), whose sum is σ = 203472908352. Its totient is φ = 202751372092.

The previous prime is 203112140111. The next prime is 203112140233. The reversal of 203112140221 is 122041211302.

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 203112140221 - 2²⁷ = 202977922493 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 (203112140261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180383221 + ... + 180384346.

It is an arithmetic number, because the mean of its divisors is an integer number (50868227088).

Almost surely, 2^203112140221 is an apocalyptic number.

It is an amenable number.

203112140221 is a deficient number, since it is larger than the sum of its proper divisors (360768131).

203112140221 is an equidigital number, since it uses as much as digits as its factorization.

203112140221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360768130.

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

Adding to 203112140221 its reverse (122041211302), we get a palindrome (325153351523).

The spelling of 203112140221 in words is "two hundred three billion, one hundred twelve million, one hundred forty thousand, two hundred twenty-one".