51722206601121 has 64 divisors (see below), whose sum is σ = 92182716364800. Its totient is φ = 27999482995008.

The previous prime is 51722206601099. The next prime is 51722206601129. The reversal of 51722206601121 is 12110660222715.

51722206601121 is a `hidden beast` number, since 5 + 1 + 7 + 2 + 2 + 20 + 6 + 601 + 1 + 21 = 666.

It is not a de Polignac number, because 51722206601121 - 2⁵ = 51722206601089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51722206601129) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 282832711 + ... + 283015523.

It is an arithmetic number, because the mean of its divisors is an integer number (1440354943200).

Almost surely, 2^{51722206601121} is an apocalyptic number.

It is an amenable number.

51722206601121 is a deficient number, since it is larger than the sum of its proper divisors (40460509763679).

51722206601121 is a wasteful number, since it uses less digits than its factorization.

51722206601121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261635 (or 261629 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

Adding to 51722206601121 its reverse (12110660222715), we get a palindrome (63832866823836).

The spelling of 51722206601121 in words is "fifty-one trillion, seven hundred twenty-two billion, two hundred six million, six hundred one thousand, one hundred twenty-one".