1023123021212 has 12 divisors (see below), whose sum is σ = 1795595562600. Its totient is φ = 510095717616.

The previous prime is 1023123021211. The next prime is 1023123021229. The reversal of 1023123021212 is 2121203213201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023123021211) 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 3 ways as a sum of consecutive naturals, for example, 366446678 + ... + 366449469.

It is an arithmetic number, because the mean of its divisors is an integer number (149632963550).

Almost surely, 2^{1023123021212} is an apocalyptic number.

It is an amenable number.

1023123021212 is a deficient number, since it is larger than the sum of its proper divisors (772472541388).

1023123021212 is a wasteful number, since it uses less digits than its factorization.

1023123021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732896500 (or 732896498 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1023123021212 its reverse (2121203213201), we get a palindrome (3144326234413).

The spelling of 1023123021212 in words is "one trillion, twenty-three billion, one hundred twenty-three million, twenty-one thousand, two hundred twelve".