51121320022 has 8 divisors (see below), whose sum is σ = 77398634376. Its totient is φ = 25321775232.

The previous prime is 51121320011. The next prime is 51121320049. The reversal of 51121320022 is 22002312115.

51121320022 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×51121320022² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119442123 + ... + 119442550.

It is an arithmetic number, because the mean of its divisors is an integer number (9674829297).

Almost surely, 2^51121320022 is an apocalyptic number.

51121320022 is a deficient number, since it is larger than the sum of its proper divisors (26277314354).

51121320022 is a wasteful number, since it uses less digits than its factorization.

51121320022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238884782.

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 51121320022 its reverse (22002312115), we get a palindrome (73123632137).

The spelling of 51121320022 in words is "fifty-one billion, one hundred twenty-one million, three hundred twenty thousand, twenty-two".