1023002213021 has 4 divisors (see below), whose sum is σ = 1023026164992. Its totient is φ = 1022978261052.

The previous prime is 1023002212951. The next prime is 1023002213029. The reversal of 1023002213021 is 1203122003201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1023002213021 - 2¹⁰ = 1023002211997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023002213029) 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, 11911805 + ... + 11997378.

It is an arithmetic number, because the mean of its divisors is an integer number (255756541248).

Almost surely, 2^{1023002213021} is an apocalyptic number.

It is an amenable number.

1023002213021 is a deficient number, since it is larger than the sum of its proper divisors (23951971).

1023002213021 is an equidigital number, since it uses as much as digits as its factorization.

1023002213021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23951970.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 1023002213021 its reverse (1203122003201), we get a palindrome (2226124216222).

The spelling of 1023002213021 in words is "one trillion, twenty-three billion, two million, two hundred thirteen thousand, twenty-one".