1002023822021 has 2 divisors, whose sum is σ = 1002023822022. Its totient is φ = 1002023822020.

The previous prime is 1002023821987. The next prime is 1002023822029. The reversal of 1002023822021 is 1202283202001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 967655853025 + 34367968996 = 983695^2 + 185386^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002023822021 - 2¹⁰ = 1002023820997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1002023822029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501011911010 + 501011911011.

It is an arithmetic number, because the mean of its divisors is an integer number (501011911011).

Almost surely, 2^{1002023822021} is an apocalyptic number.

It is an amenable number.

1002023822021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002023822021 is an equidigital number, since it uses as much as digits as its factorization.

1002023822021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 23.

The spelling of 1002023822021 in words is "one trillion, two billion, twenty-three million, eight hundred twenty-two thousand, twenty-one".