55122101020 has 96 divisors (see below), whose sum is σ = 137011875840. Its totient is φ = 18236225280.

The previous prime is 55122101011. The next prime is 55122101033. The reversal of 55122101020 is 2010122155.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 408186 + ... + 526174.

It is an arithmetic number, because the mean of its divisors is an integer number (1427207040).

Almost surely, 2^55122101020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55122101020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68505937920).

55122101020 is an abundant number, since it is smaller than the sum of its proper divisors (81889774820).

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

55122101020 is a wasteful number, since it uses less digits than its factorization.

55122101020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118123 (or 118121 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

Adding to 55122101020 its reverse (2010122155), we get a palindrome (57132223175).

The spelling of 55122101020 in words is "fifty-five billion, one hundred twenty-two million, one hundred one thousand, twenty".