2131121243030 has 96 divisors (see below), whose sum is σ = 4167272603520. Its totient is φ = 784326965760.

The previous prime is 2131121242997. The next prime is 2131121243039. The reversal of 2131121243030 is 303421211312.

It is a junction number, because it is equal to n+sod(n) for n = 2131121242987 and 2131121243005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131121243039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1224077960 + ... + 1224079700.

It is an arithmetic number, because the mean of its divisors is an integer number (43409089620).

Almost surely, 2^{2131121243030} is an apocalyptic number.

2131121243030 is a deficient number, since it is larger than the sum of its proper divisors (2036151360490).

2131121243030 is a wasteful number, since it uses less digits than its factorization.

2131121243030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3706 (or 3693 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 2131121243030 its reverse (303421211312), we get a palindrome (2434542454342).

The spelling of 2131121243030 in words is "two trillion, one hundred thirty-one billion, one hundred twenty-one million, two hundred forty-three thousand, thirty".