21322114030381 has 2 divisors, whose sum is σ = 21322114030382. Its totient is φ = 21322114030380.

The previous prime is 21322114030367. The next prime is 21322114030433. The reversal of 21322114030381 is 18303041122312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11171938578025 + 10150175452356 = 3342445^2 + 3185934^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21322114030381 is a prime.

It is a super-2 number, since 2×21322114030381² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21322114030351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10661057015190 + 10661057015191.

It is an arithmetic number, because the mean of its divisors is an integer number (10661057015191).

Almost surely, 2^{21322114030381} is an apocalyptic number.

It is an amenable number.

21322114030381 is a deficient number, since it is larger than the sum of its proper divisors (1).

21322114030381 is an equidigital number, since it uses as much as digits as its factorization.

21322114030381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 31.

Adding to 21322114030381 its reverse (18303041122312), we get a palindrome (39625155152693).

The spelling of 21322114030381 in words is "twenty-one trillion, three hundred twenty-two billion, one hundred fourteen million, thirty thousand, three hundred eighty-one".