2021303123 has 16 divisors (see below), whose sum is σ = 2321189376. Its totient is φ = 1724224320.

The previous prime is 2021303083. The next prime is 2021303131. The reversal of 2021303123 is 3213031202.

It is not a de Polignac number, because 2021303123 - 2¹⁶ = 2021237587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021303153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1956215 + ... + 1957247.

It is an arithmetic number, because the mean of its divisors is an integer number (145074336).

Almost surely, 2^2021303123 is an apocalyptic number.

2021303123 is a deficient number, since it is larger than the sum of its proper divisors (299886253).

2021303123 is a wasteful number, since it uses less digits than its factorization.

2021303123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2114.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 2021303123 is about 44958.9048242948. The cubic root of 2021303123 is about 1264.3786359243.

Adding to 2021303123 its reverse (3213031202), we get a palindrome (5234334325).

The spelling of 2021303123 in words is "two billion, twenty-one million, three hundred three thousand, one hundred twenty-three".