2121231122330 has 64 divisors (see below), whose sum is σ = 4017590928000. Its totient is φ = 805195362048.

The previous prime is 2121231122191. The next prime is 2121231122333. The reversal of 2121231122330 is 332211321212.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2121231122296 and 2121231122305.

It is not an unprimeable number, because it can be changed into a prime (2121231122333) 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, 134767601 + ... + 134783339.

It is an arithmetic number, because the mean of its divisors is an integer number (62774858250).

Almost surely, 2^{2121231122330} is an apocalyptic number.

2121231122330 is a deficient number, since it is larger than the sum of its proper divisors (1896359805670).

2121231122330 is a wasteful number, since it uses less digits than its factorization.

2121231122330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23711.

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

Adding to 2121231122330 its reverse (332211321212), we get a palindrome (2453442443542).

The spelling of 2121231122330 in words is "two trillion, one hundred twenty-one billion, two hundred thirty-one million, one hundred twenty-two thousand, three hundred thirty".