2112120430140 has 96 divisors (see below), whose sum is σ = 6760336826880. Its totient is φ = 482659566336.

The previous prime is 2112120430139. The next prime is 2112120430141. The reversal of 2112120430140 is 410340212112.

It is an interprime number because it is at equal distance from previous prime (2112120430139) and next prime (2112120430141).

It is a super-2 number, since 2×2112120430140² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112120430141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1261671 + ... + 2411649.

It is an arithmetic number, because the mean of its divisors is an integer number (70420175280).

Almost surely, 2^{2112120430140} is an apocalyptic number.

2112120430140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2112120430140 is an abundant number, since it is smaller than the sum of its proper divisors (4648216396740).

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

2112120430140 is a wasteful number, since it uses less digits than its factorization.

2112120430140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1154371 (or 1154369 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 2112120430140 its reverse (410340212112), we get a palindrome (2522460642252).

The spelling of 2112120430140 in words is "two trillion, one hundred twelve billion, one hundred twenty million, four hundred thirty thousand, one hundred forty".