55121314120 has 64 divisors (see below), whose sum is σ = 125410032000. Its totient is φ = 21802841088.

The previous prime is 55121314111. The next prime is 55121314121. The reversal of 55121314120 is 2141312155.

It is a super-2 number, since 2×55121314120² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55121314121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1970391 + ... + 1998169.

It is an arithmetic number, because the mean of its divisors is an integer number (1959531750).

Almost surely, 2^55121314120 is an apocalyptic number.

It is an amenable number.

55121314120 is an abundant number, since it is smaller than the sum of its proper divisors (70288717880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55121314120 is a wasteful number, since it uses less digits than its factorization.

55121314120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28342 (or 28338 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 55121314120 its reverse (2141312155), we get a palindrome (57262626275).

The spelling of 55121314120 in words is "fifty-five billion, one hundred twenty-one million, three hundred fourteen thousand, one hundred twenty".