33442111421 has 2 divisors, whose sum is σ = 33442111422. Its totient is φ = 33442111420.

The previous prime is 33442111387. The next prime is 33442111441. The reversal of 33442111421 is 12411124433.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32911039396 + 531072025 = 181414^2 + 23045^2 .

It is a cyclic number.

It is not a de Polignac number, because 33442111421 - 2¹⁸ = 33441849277 is a prime.

It is a super-2 number, since 2×33442111421² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33442111441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16721055710 + 16721055711.

It is an arithmetic number, because the mean of its divisors is an integer number (16721055711).

Almost surely, 2^33442111421 is an apocalyptic number.

It is an amenable number.

33442111421 is a deficient number, since it is larger than the sum of its proper divisors (1).

33442111421 is an equidigital number, since it uses as much as digits as its factorization.

33442111421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 26.

Adding to 33442111421 its reverse (12411124433), we get a palindrome (45853235854).

The spelling of 33442111421 in words is "thirty-three billion, four hundred forty-two million, one hundred eleven thousand, four hundred twenty-one".