36402123016221 has 16 divisors (see below), whose sum is σ = 50229523008000. Its totient is φ = 23422059123008.

The previous prime is 36402123016187. The next prime is 36402123016247. The reversal of 36402123016221 is 12261032120463.

It is a cyclic number.

It is not a de Polignac number, because 36402123016221 - 2⁷ = 36402123016093 is a prime.

It is a super-2 number, since 2×36402123016221² (a number of 28 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36402123016121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81852621 + ... + 82296146.

It is an arithmetic number, because the mean of its divisors is an integer number (3139345188000).

Almost surely, 2^{36402123016221} is an apocalyptic number.

It is an amenable number.

36402123016221 is a deficient number, since it is larger than the sum of its proper divisors (13827399991779).

36402123016221 is a wasteful number, since it uses less digits than its factorization.

36402123016221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164151348.

The product of its (nonzero) digits is 20736, while the sum is 33.

Adding to 36402123016221 its reverse (12261032120463), we get a palindrome (48663155136684).

The spelling of 36402123016221 in words is "thirty-six trillion, four hundred two billion, one hundred twenty-three million, sixteen thousand, two hundred twenty-one".