1020321929123 has 16 divisors (see below), whose sum is σ = 1168752582144. Its totient is φ = 872560772160.

The previous prime is 1020321929089. The next prime is 1020321929129. The reversal of 1020321929123 is 3219291230201.

It is not a de Polignac number, because 1020321929123 - 2¹² = 1020321925027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1020321929129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6447836 + ... + 6604182.

It is an arithmetic number, because the mean of its divisors is an integer number (73047036384).

Almost surely, 2^{1020321929123} is an apocalyptic number.

1020321929123 is a deficient number, since it is larger than the sum of its proper divisors (148430653021).

1020321929123 is a wasteful number, since it uses less digits than its factorization.

1020321929123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158482.

The product of its (nonzero) digits is 11664, while the sum is 35.

The spelling of 1020321929123 in words is "one trillion, twenty billion, three hundred twenty-one million, nine hundred twenty-nine thousand, one hundred twenty-three".