1203312312221 has 8 divisors (see below), whose sum is σ = 1266655216320. Its totient is φ = 1139970475872.

The previous prime is 1203312312157. The next prime is 1203312312239. The reversal of 1203312312221 is 1222132133021.

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

It is a cyclic number.

It is not a de Polignac number, because 1203312312221 - 2⁶ = 1203312312157 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 (1203312312721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3202961 + ... + 3558873.

It is an arithmetic number, because the mean of its divisors is an integer number (158331902040).

Almost surely, 2^{1203312312221} is an apocalyptic number.

It is an amenable number.

1203312312221 is a deficient number, since it is larger than the sum of its proper divisors (63342904099).

1203312312221 is a wasteful number, since it uses less digits than its factorization.

1203312312221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533875.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1203312312221 its reverse (1222132133021), we get a palindrome (2425444445242).

The spelling of 1203312312221 in words is "one trillion, two hundred three billion, three hundred twelve million, three hundred twelve thousand, two hundred twenty-one".