51101045121 has 16 divisors (see below), whose sum is σ = 78303283200. Its totient is φ = 29037463248.

The previous prime is 51101045101. The next prime is 51101045153. The reversal of 51101045121 is 12154010115.

It is not a de Polignac number, because 51101045121 - 2⁶ = 51101045057 is a prime.

It is a super-2 number, since 2×51101045121² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (51101045101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6793401 + ... + 6800918.

It is an arithmetic number, because the mean of its divisors is an integer number (4893955200).

Almost surely, 2^51101045121 is an apocalyptic number.

It is an amenable number.

51101045121 is a deficient number, since it is larger than the sum of its proper divisors (27202238079).

51101045121 is a wasteful number, since it uses less digits than its factorization.

51101045121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13594508.

The product of its (nonzero) digits is 200, while the sum is 21.

Adding to 51101045121 its reverse (12154010115), we get a palindrome (63255055236).

The spelling of 51101045121 in words is "fifty-one billion, one hundred one million, forty-five thousand, one hundred twenty-one".