1302222331221 has 64 divisors (see below), whose sum is σ = 2091582259200. Its totient is φ = 704599923456.

The previous prime is 1302222331177. The next prime is 1302222331231. The reversal of 1302222331221 is 1221332222031.

It is not a de Polignac number, because 1302222331221 - 2⁷ = 1302222331093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1302222331191 and 1302222331200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1302222331231) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20366620 + ... + 20430458.

It is an arithmetic number, because the mean of its divisors is an integer number (32680972800).

Almost surely, 2^{1302222331221} is an apocalyptic number.

It is an amenable number.

1302222331221 is a deficient number, since it is larger than the sum of its proper divisors (789359927979).

1302222331221 is a wasteful number, since it uses less digits than its factorization.

1302222331221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64298.

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

Adding to 1302222331221 its reverse (1221332222031), we get a palindrome (2523554553252).

The spelling of 1302222331221 in words is "one trillion, three hundred two billion, two hundred twenty-two million, three hundred thirty-one thousand, two hundred twenty-one".