51232220112213 has 12 divisors (see below), whose sum is σ = 84573823677408. Its totient is φ = 29275554349800.

The previous prime is 51232220112209. The next prime is 51232220112233. The reversal of 51232220112213 is 31221102223215.

51232220112213 is a `hidden beast` number, since 5 + 1 + 2 + 322 + 201 + 122 + 13 = 666.

It is not a de Polignac number, because 51232220112213 - 2² = 51232220112209 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51232220112233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 406604921463 + ... + 406604921588.

It is an arithmetic number, because the mean of its divisors is an integer number (7047818639784).

Almost surely, 2^{51232220112213} is an apocalyptic number.

It is an amenable number.

51232220112213 is a deficient number, since it is larger than the sum of its proper divisors (33341603565195).

51232220112213 is a wasteful number, since it uses less digits than its factorization.

51232220112213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813209843064 (or 813209843061 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 51232220112213 its reverse (31221102223215), we get a palindrome (82453322335428).

The spelling of 51232220112213 in words is "fifty-one trillion, two hundred thirty-two billion, two hundred twenty million, one hundred twelve thousand, two hundred thirteen".