122101110 has 72 divisors (see below), whose sum is σ = 326604096. Its totient is φ = 31648320.

The previous prime is 122101099. The next prime is 122101117. The reversal of 122101110 is 11101221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 122101092 and 122101101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122101117) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 122715 + ... + 123705.

It is an arithmetic number, because the mean of its divisors is an integer number (4536168).

Almost surely, 2^122101110 is an apocalyptic number.

122101110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 122101110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163302048).

122101110 is an abundant number, since it is smaller than the sum of its proper divisors (204502986).

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

122101110 is a wasteful number, since it uses less digits than its factorization.

122101110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078 (or 1038 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 122101110 is about 11049.9371038934. The cubic root of 122101110 is about 496.1045429784.

Adding to 122101110 its reverse (11101221), we get a palindrome (133202331).

The spelling of 122101110 in words is "one hundred twenty-two million, one hundred one thousand, one hundred ten".