122222121100110 has 128 divisors (see below), whose sum is σ = 335358440507520. Its totient is φ = 32058260922240.

The previous prime is 122222121100097. The next prime is 122222121100111. The reversal of 122222121100110 is 11001121222221.

122222121100110 is a `hidden beast` number, since 1 + 222 + 221 + 2 + 110 + 0 + 110 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122222121100111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 44473917 + ... + 47142056.

It is an arithmetic number, because the mean of its divisors is an integer number (2619987816465).

Almost surely, 2^{122222121100110} is an apocalyptic number.

122222121100110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122222121100110 is an abundant number, since it is smaller than the sum of its proper divisors (213136319407410).

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

122222121100110 is an frugal number, since it uses more digits than its factorization.

122222121100110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91616062 (or 91616044 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 122222121100110 its reverse (11001121222221), we get a palindrome (133223242322331).

The spelling of 122222121100110 in words is "one hundred twenty-two trillion, two hundred twenty-two billion, one hundred twenty-one million, one hundred thousand, one hundred ten".