1302000221221 has 16 divisors (see below), whose sum is σ = 1506765272320. Its totient is φ = 1101978846720.

The previous prime is 1302000221201. The next prime is 1302000221231. The reversal of 1302000221221 is 1221220002031.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1302000221221 - 2¹⁵ = 1302000188453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1302000221195 and 1302000221204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1302000221201) 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 15 ways as a sum of consecutive naturals, for example, 1885890 + ... + 2482051.

It is an arithmetic number, because the mean of its divisors is an integer number (94172829520).

Almost surely, 2^{1302000221221} is an apocalyptic number.

It is an amenable number.

1302000221221 is a deficient number, since it is larger than the sum of its proper divisors (204765051099).

1302000221221 is an equidigital number, since it uses as much as digits as its factorization.

1302000221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4368484.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 1302000221221 its reverse (1221220002031), we get a palindrome (2523220223252).

The spelling of 1302000221221 in words is "one trillion, three hundred two billion, two hundred twenty-one thousand, two hundred twenty-one".