51120205211201 has 16 divisors (see below), whose sum is σ = 61503454181760. Its totient is φ = 41507456590080.

The previous prime is 51120205211189. The next prime is 51120205211261. The reversal of 51120205211201 is 10211250202115.

51120205211201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 51120205211201 - 2²² = 51120201016897 is a prime.

It is a super-2 number, since 2×51120205211201² (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 (51120205211261) 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 15 ways as a sum of consecutive naturals, for example, 15568376 + ... + 18563801.

It is an arithmetic number, because the mean of its divisors is an integer number (3843965886360).

Almost surely, 2^{51120205211201} is an apocalyptic number.

It is an amenable number.

51120205211201 is a deficient number, since it is larger than the sum of its proper divisors (10383248970559).

51120205211201 is a wasteful number, since it uses less digits than its factorization.

51120205211201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34143464.

The product of its (nonzero) digits is 400, while the sum is 23.

Adding to 51120205211201 its reverse (10211250202115), we get a palindrome (61331455413316).

The spelling of 51120205211201 in words is "fifty-one trillion, one hundred twenty billion, two hundred five million, two hundred eleven thousand, two hundred one".