1312312200221 has 8 divisors (see below), whose sum is σ = 1432375233600. Its totient is φ = 1192376154240.

The previous prime is 1312312200217. The next prime is 1312312200229. The reversal of 1312312200221 is 1220022132131.

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 1312312200221 - 2² = 1312312200217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1312312200193 and 1312312200202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312312200229) 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, 31725236 + ... + 31766573.

It is an arithmetic number, because the mean of its divisors is an integer number (179046904200).

Almost surely, 2^{1312312200221} is an apocalyptic number.

1312312200221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1312312200221 is a deficient number, since it is larger than the sum of its proper divisors (120063033379).

1312312200221 is a wasteful number, since it uses less digits than its factorization.

1312312200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63493699.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1312312200221 its reverse (1220022132131), we get a palindrome (2532334332352).

The spelling of 1312312200221 in words is "one trillion, three hundred twelve billion, three hundred twelve million, two hundred thousand, two hundred twenty-one".