1302203222221 has 12 divisors (see below), whose sum is σ = 1431405819676. Its totient is φ = 1183772747520.

The previous prime is 1302203222207. The next prime is 1302203222291. The reversal of 1302203222221 is 1222223022031.

It can be written as a sum of positive squares in 2 ways, for example, as 450255762121 + 851947460100 = 671011^2 + 923010^2 .

It is not a de Polignac number, because 1302203222221 - 2⁷ = 1302203222093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1302203222192 and 1302203222201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1302203222291) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2941231 + ... + 3354883.

Almost surely, 2^{1302203222221} is an apocalyptic number.

1302203222221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1302203222221 is a deficient number, since it is larger than the sum of its proper divisors (129202597455).

1302203222221 is a wasteful number, since it uses less digits than its factorization.

1302203222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439692 (or 439681 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 1302203222221 its reverse (1222223022031), we get a palindrome (2524426244252).

The spelling of 1302203222221 in words is "one trillion, three hundred two billion, two hundred three million, two hundred twenty-two thousand, two hundred twenty-one".