1302312223221 has 16 divisors (see below), whose sum is σ = 1740272978304. Its totient is φ = 866280613184.

The previous prime is 1302312223217. The next prime is 1302312223259. The reversal of 1302312223221 is 1223222132031.

It is a cyclic number.

It is not a de Polignac number, because 1302312223221 - 2² = 1302312223217 is a prime.

It is a super-2 number, since 2×1302312223221² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1302312223191 and 1302312223200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1302312223721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6536935 + ... + 6733211.

It is an arithmetic number, because the mean of its divisors is an integer number (108767061144).

Almost surely, 2^{1302312223221} is an apocalyptic number.

It is an amenable number.

1302312223221 is a deficient number, since it is larger than the sum of its proper divisors (437960755083).

1302312223221 is a wasteful number, since it uses less digits than its factorization.

1302312223221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201180.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 1302312223221 its reverse (1223222132031), we get a palindrome (2525534355252).

The spelling of 1302312223221 in words is "one trillion, three hundred two billion, three hundred twelve million, two hundred twenty-three thousand, two hundred twenty-one".