102023200020021 has 16 divisors (see below), whose sum is σ = 155466636609024. Its totient is φ = 58297954151664.

The previous prime is 102023200020011. The next prime is 102023200020143. The reversal of 102023200020021 is 120020002320201.

It is a happy number.

It is not a de Polignac number, because 102023200020021 - 2¹³ = 102023200011829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102023200020011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41154055 + ... + 43562628.

It is an arithmetic number, because the mean of its divisors is an integer number (9716664788064).

Almost surely, 2^{102023200020021} is an apocalyptic number.

It is an amenable number.

102023200020021 is a deficient number, since it is larger than the sum of its proper divisors (53443436589003).

102023200020021 is an equidigital number, since it uses as much as digits as its factorization.

102023200020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84774040.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 102023200020021 its reverse (120020002320201), we get a palindrome (222043202340222).

The spelling of 102023200020021 in words is "one hundred two trillion, twenty-three billion, two hundred million, twenty thousand, twenty-one".