2121231030330 has 64 divisors (see below), whose sum is σ = 5255650188288. Its totient is φ = 547365358080.

The previous prime is 2121231030301. The next prime is 2121231030337. The reversal of 2121231030330 is 330301321212.

It is a junction number, because it is equal to n+sod(n) for n = 2121231030297 and 2121231030306.

It is not an unprimeable number, because it can be changed into a prime (2121231030337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10908312 + ... + 11101068.

It is an arithmetic number, because the mean of its divisors is an integer number (82119534192).

Almost surely, 2^{2121231030330} is an apocalyptic number.

2121231030330 is an abundant number, since it is smaller than the sum of its proper divisors (3134419157958).

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

2121231030330 is a wasteful number, since it uses less digits than its factorization.

2121231030330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204631.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 2121231030330 its reverse (330301321212), we get a palindrome (2451532351542).

The spelling of 2121231030330 in words is "two trillion, one hundred twenty-one billion, two hundred thirty-one million, thirty thousand, three hundred thirty".