2021042010023 has 4 divisors (see below), whose sum is σ = 2139926834160. Its totient is φ = 1902157185888.

The previous prime is 2021042010017. The next prime is 2021042010037. The reversal of 2021042010023 is 3200102401202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2021042010023 - 2⁴ = 2021042010007 is a prime.

It is a super-2 number, since 2×2021042010023² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 118884824119 = 2021042010023 / (2 + 0 + 2 + 1 + 0 + 4 + 2 + 0 + 1 + 0 + 0 + 2 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2021042009983 and 2021042010010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021042010623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59442412043 + ... + 59442412076.

It is an arithmetic number, because the mean of its divisors is an integer number (534981708540).

Almost surely, 2^{2021042010023} is an apocalyptic number.

2021042010023 is a deficient number, since it is larger than the sum of its proper divisors (118884824137).

2021042010023 is a wasteful number, since it uses less digits than its factorization.

2021042010023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118884824136.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 2021042010023 its reverse (3200102401202), we get a palindrome (5221144411225).

The spelling of 2021042010023 in words is "two trillion, twenty-one billion, forty-two million, ten thousand, twenty-three".