55123211022 has 32 divisors (see below), whose sum is σ = 121508722944. Its totient is φ = 16531795200.

The previous prime is 55123210979. The next prime is 55123211029. The reversal of 55123211022 is 22011232155.

It is a junction number, because it is equal to n+sod(n) for n = 55123210983 and 55123211001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55123211029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4298754 + ... + 4311557.

It is an arithmetic number, because the mean of its divisors is an integer number (3797147592).

Almost surely, 2^55123211022 is an apocalyptic number.

55123211022 is an abundant number, since it is smaller than the sum of its proper divisors (66385511922).

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

55123211022 is a wasteful number, since it uses less digits than its factorization.

55123211022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8610424.

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 55123211022 its reverse (22011232155), we get a palindrome (77134443177).

The spelling of 55123211022 in words is "fifty-five billion, one hundred twenty-three million, two hundred eleven thousand, twenty-two".