122100030 has 96 divisors (see below), whose sum is σ = 346469760. Its totient is φ = 29652480.

The previous prime is 122100029. The next prime is 122100053. The reversal of 122100030 is 30001221.

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 = 122099985 and 122100021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 91770 + ... + 93090.

It is an arithmetic number, because the mean of its divisors is an integer number (3609060).

Almost surely, 2^122100030 is an apocalyptic number.

122100030 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 122100030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173234880).

122100030 is an abundant number, since it is smaller than the sum of its proper divisors (224369730).

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

122100030 is a wasteful number, since it uses less digits than its factorization.

122100030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1426 (or 1423 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 122100030 is about 11049.8882347289. Note that the first 3 decimals coincide. The cubic root of 122100030 is about 496.1030802713.

Adding to 122100030 its reverse (30001221), we get a palindrome (152101251).

The spelling of 122100030 in words is "one hundred twenty-two million, one hundred thousand, thirty".