1302132221021 has 2 divisors, whose sum is σ = 1302132221022. Its totient is φ = 1302132221020.

The previous prime is 1302132221003. The next prime is 1302132221053. The reversal of 1302132221021 is 1201222312031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 834918960121 + 467213260900 = 913739^2 + 683530^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1302132221021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1302132220984 and 1302132221002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1302132221321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 651066110510 + 651066110511.

It is an arithmetic number, because the mean of its divisors is an integer number (651066110511).

Almost surely, 2^{1302132221021} is an apocalyptic number.

It is an amenable number.

1302132221021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1302132221021 is an equidigital number, since it uses as much as digits as its factorization.

1302132221021 is an evil number, because the sum of its binary digits is even.

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

Adding to 1302132221021 its reverse (1201222312031), we get a palindrome (2503354533052).

The spelling of 1302132221021 in words is "one trillion, three hundred two billion, one hundred thirty-two million, two hundred twenty-one thousand, twenty-one".