55122220452234 has 128 divisors (see below), whose sum is σ = 128030386176000. Its totient is φ = 15675035604480.

The previous prime is 55122220452227. The next prime is 55122220452283. The reversal of 55122220452234 is 43225402222155.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 55122220452192 and 55122220452201.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1406195367 + ... + 1406234565.

It is an arithmetic number, because the mean of its divisors is an integer number (1000237392000).

Almost surely, 2^{55122220452234} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55122220452234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64015193088000).

55122220452234 is an abundant number, since it is smaller than the sum of its proper divisors (72908165723766).

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

55122220452234 is a wasteful number, since it uses less digits than its factorization.

55122220452234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62420.

The product of its (nonzero) digits is 384000, while the sum is 39.

Adding to 55122220452234 its reverse (43225402222155), we get a palindrome (98347622674389).

The spelling of 55122220452234 in words is "fifty-five trillion, one hundred twenty-two billion, two hundred twenty million, four hundred fifty-two thousand, two hundred thirty-four".