40433433201221 has 2 divisors, whose sum is σ = 40433433201222. Its totient is φ = 40433433201220.

The previous prime is 40433433201197. The next prime is 40433433201341. The reversal of 40433433201221 is 12210233433404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34580444904196 + 5852988297025 = 5880514^2 + 2419295^2 .

It is a cyclic number.

It is not a de Polignac number, because 40433433201221 - 2¹⁰ = 40433433200197 is a prime.

It is a super-3 number, since 3×40433433201221³ (a number of 42 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40433453201221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20216716600610 + 20216716600611.

It is an arithmetic number, because the mean of its divisors is an integer number (20216716600611).

Almost surely, 2^{40433433201221} is an apocalyptic number.

It is an amenable number.

40433433201221 is a deficient number, since it is larger than the sum of its proper divisors (1).

40433433201221 is an equidigital number, since it uses as much as digits as its factorization.

40433433201221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 32.

Adding to 40433433201221 its reverse (12210233433404), we get a palindrome (52643666634625).

The spelling of 40433433201221 in words is "forty trillion, four hundred thirty-three billion, four hundred thirty-three million, two hundred one thousand, two hundred twenty-one".