1322523802381 has 2 divisors, whose sum is σ = 1322523802382. Its totient is φ = 1322523802380.

The previous prime is 1322523802357. The next prime is 1322523802417. The reversal of 1322523802381 is 1832083252231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1277218679881 + 45305122500 = 1130141^2 + 212850^2 .

It is a cyclic number.

It is not a de Polignac number, because 1322523802381 - 2⁵ = 1322523802349 is a prime.

It is a super-2 number, since 2×1322523802381² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1322523802181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661261901190 + 661261901191.

It is an arithmetic number, because the mean of its divisors is an integer number (661261901191).

Almost surely, 2^{1322523802381} is an apocalyptic number.

It is an amenable number.

1322523802381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1322523802381 is an equidigital number, since it uses as much as digits as its factorization.

1322523802381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 40.

The spelling of 1322523802381 in words is "one trillion, three hundred twenty-two billion, five hundred twenty-three million, eight hundred two thousand, three hundred eighty-one".