1020001002023 has 4 divisors (see below), whose sum is σ = 1024233371568. Its totient is φ = 1015768632480.

The previous prime is 1020001002011. The next prime is 1020001002079. The reversal of 1020001002023 is 3202001000201.

It is a happy number.

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 1020001002023 - 2³⁰ = 1018927260199 is a prime.

It is a super-3 number, since 3×1020001002023³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020001001995 and 1020001002013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020001002523) 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, 2116184411 + ... + 2116184892.

It is an arithmetic number, because the mean of its divisors is an integer number (256058342892).

Almost surely, 2^{1020001002023} is an apocalyptic number.

1020001002023 is a deficient number, since it is larger than the sum of its proper divisors (4232369545).

1020001002023 is an equidigital number, since it uses as much as digits as its factorization.

1020001002023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4232369544.

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 1020001002023 its reverse (3202001000201), we get a palindrome (4222002002224).

The spelling of 1020001002023 in words is "one trillion, twenty billion, one million, two thousand, twenty-three".