55302361132221 has 12 divisors (see below), whose sum is σ = 91292786631072. Its totient is φ = 31601349218376.

The previous prime is 55302361132219. The next prime is 55302361132231. The reversal of 55302361132221 is 12223116320355.

55302361132221 is a `hidden beast` number, since 5 + 5 + 3 + 0 + 2 + 3 + 611 + 32 + 2 + 2 + 1 = 666.

55302361132221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55302361132221 - 2¹ = 55302361132219 is a prime.

It is a super-2 number, since 2×55302361132221² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55302361132201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 438907627971 + ... + 438907628096.

It is an arithmetic number, because the mean of its divisors is an integer number (7607732219256).

Almost surely, 2^{55302361132221} is an apocalyptic number.

It is an amenable number.

55302361132221 is a deficient number, since it is larger than the sum of its proper divisors (35990425498851).

55302361132221 is a wasteful number, since it uses less digits than its factorization.

55302361132221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 877815256080 (or 877815256077 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

Adding to 55302361132221 its reverse (12223116320355), we get a palindrome (67525477452576).

The spelling of 55302361132221 in words is "fifty-five trillion, three hundred two billion, three hundred sixty-one million, one hundred thirty-two thousand, two hundred twenty-one".