2112211530 has 192 divisors, whose sum is σ = 6484278528. Its totient is φ = 470292480.

The previous prime is 2112211523. The next prime is 2112211561. The reversal of 2112211530 is 351122112.

2112211530 is a `hidden beast` number, since 2 + 1 + 122 + 11 + 530 = 666.

It is a super-2 number, since 2×2112211530² = 8922875094929881800, which contains 22 as substring.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4336947 + ... + 4337433.

It is an arithmetic number, because the mean of its divisors is an integer number (33772284).

Almost surely, 2^2112211530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2112211530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3242139264).

2112211530 is an abundant number, since it is smaller than the sum of its proper divisors (4372066998).

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

2112211530 is a wasteful number, since it uses less digits than its factorization.

2112211530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861 (or 858 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 2112211530 is about 45958.8025300921. The cubic root of 2112211530 is about 1283.0565645164.

Adding to 2112211530 its reverse (351122112), we get a palindrome (2463333642).

The spelling of 2112211530 in words is "two billion, one hundred twelve million, two hundred eleven thousand, five hundred thirty".