30122120 has 64 divisors (see below), whose sum is σ = 78019200. Its totient is φ = 10252800.

The previous prime is 30122117. The next prime is 30122123. The reversal of 30122120 is 2122103.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (30122117) and next prime (30122123).

It is a super-2 number, since 2×30122120² = 1814684226588800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30122123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49820 + ... + 50420.

It is an arithmetic number, because the mean of its divisors is an integer number (1219050).

Almost surely, 2^30122120 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30122120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39009600).

30122120 is an abundant number, since it is smaller than the sum of its proper divisors (47897080).

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

30122120 is a wasteful number, since it uses less digits than its factorization.

30122120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798 (or 794 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 30122120 is about 5488.3622329434. The cubic root of 30122120 is about 311.1442967246.

Adding to 30122120 its reverse (2122103), we get a palindrome (32244223).

The spelling of 30122120 in words is "thirty million, one hundred twenty-two thousand, one hundred twenty".