203123020331221 has 8 divisors (see below), whose sum is σ = 203184795340800. Its totient is φ = 203061252857232.

The previous prime is 203123020331183. The next prime is 203123020331227. The reversal of 203123020331221 is 122133020321302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203123020331221 is a prime.

It is a super-2 number, since 2×203123020331221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203123020331227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52271076 + ... + 56022418.

It is an arithmetic number, because the mean of its divisors is an integer number (25398099417600).

Almost surely, 2^{203123020331221} is an apocalyptic number.

It is an amenable number.

203123020331221 is a deficient number, since it is larger than the sum of its proper divisors (61775009579).

203123020331221 is a wasteful number, since it uses less digits than its factorization.

203123020331221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3767795.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 203123020331221 its reverse (122133020321302), we get a palindrome (325256040652523).

The spelling of 203123020331221 in words is "two hundred three trillion, one hundred twenty-three billion, twenty million, three hundred thirty-one thousand, two hundred twenty-one".