51223312031201 has 16 divisors (see below), whose sum is σ = 52799421299328. Its totient is φ = 49671040406400.

The previous prime is 51223312031189. The next prime is 51223312031207. The reversal of 51223312031201 is 10213021332215.

It is a de Polignac number, because none of the positive numbers 2^k-51223312031201 is a prime.

It is a super-2 number, since 2×51223312031201² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51223312031207) 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, 75311021 + ... + 75988133.

It is an arithmetic number, because the mean of its divisors is an integer number (3299963831208).

Almost surely, 2^{51223312031201} is an apocalyptic number.

It is an amenable number.

51223312031201 is a deficient number, since it is larger than the sum of its proper divisors (1576109268127).

51223312031201 is a wasteful number, since it uses less digits than its factorization.

51223312031201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694712.

The product of its (nonzero) digits is 2160, while the sum is 26.

Adding to 51223312031201 its reverse (10213021332215), we get a palindrome (61436333363416).

The spelling of 51223312031201 in words is "fifty-one trillion, two hundred twenty-three billion, three hundred twelve million, thirty-one thousand, two hundred one".