51105222201 has 32 divisors (see below), whose sum is σ = 75385957248. Its totient is φ = 30535280640.

The previous prime is 51105222187. The next prime is 51105222211. The reversal of 51105222201 is 10222250115.

It is not a de Polignac number, because 51105222201 - 2⁹ = 51105221689 is a prime.

It is a super-2 number, since 2×51105222201² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51105222211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10349005 + ... + 10353941.

It is an arithmetic number, because the mean of its divisors is an integer number (2355811164).

Almost surely, 2^51105222201 is an apocalyptic number.

It is an amenable number.

51105222201 is a deficient number, since it is larger than the sum of its proper divisors (24280735047).

51105222201 is a wasteful number, since it uses less digits than its factorization.

51105222201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9321.

The product of its (nonzero) digits is 400, while the sum is 21.

Adding to 51105222201 its reverse (10222250115), we get a palindrome (61327472316).

The spelling of 51105222201 in words is "fifty-one billion, one hundred five million, two hundred twenty-two thousand, two hundred one".