55121380130 has 16 divisors (see below), whose sum is σ = 104440510080. Its totient is φ = 20888101872.

The previous prime is 55121380129. The next prime is 55121380133. The reversal of 55121380130 is 3108312155.

It is a happy number.

55121380130 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 55121380093 and 55121380102.

It is not an unprimeable number, because it can be changed into a prime (55121380133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145056074 + ... + 145056453.

It is an arithmetic number, because the mean of its divisors is an integer number (6527531880).

Almost surely, 2^55121380130 is an apocalyptic number.

55121380130 is a deficient number, since it is larger than the sum of its proper divisors (49319129950).

55121380130 is a wasteful number, since it uses less digits than its factorization.

55121380130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290112553.

The product of its (nonzero) digits is 3600, while the sum is 29.

Adding to 55121380130 its reverse (3108312155), we get a palindrome (58229692285).

The spelling of 55121380130 in words is "fifty-five billion, one hundred twenty-one million, three hundred eighty thousand, one hundred thirty".