2021000207923 has 2 divisors, whose sum is σ = 2021000207924. Its totient is φ = 2021000207922.

The previous prime is 2021000207921. The next prime is 2021000207969. The reversal of 2021000207923 is 3297020001202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2021000207923 - 2¹ = 2021000207921 is a prime.

Together with 2021000207921, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 2021000207891 and 2021000207900.

It is not a weakly prime, because it can be changed into another prime (2021000207921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010500103961 + 1010500103962.

It is an arithmetic number, because the mean of its divisors is an integer number (1010500103962).

Almost surely, 2^{2021000207923} is an apocalyptic number.

2021000207923 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021000207923 is an equidigital number, since it uses as much as digits as its factorization.

2021000207923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 28.

The spelling of 2021000207923 in words is "two trillion, twenty-one billion, two hundred seven thousand, nine hundred twenty-three".