20210102021023 has 2 divisors, whose sum is σ = 20210102021024. Its totient is φ = 20210102021022.

The previous prime is 20210102020993. The next prime is 20210102021113. The reversal of 20210102021023 is 32012020101202.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20210102021023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20210102020988 and 20210102021006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20210102021323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105051010511 + 10105051010512.

It is an arithmetic number, because the mean of its divisors is an integer number (10105051010512).

Almost surely, 2^{20210102021023} is an apocalyptic number.

20210102021023 is a deficient number, since it is larger than the sum of its proper divisors (1).

20210102021023 is an equidigital number, since it uses as much as digits as its factorization.

20210102021023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20210102021023 its reverse (32012020101202), we get a palindrome (52222122122225).

The spelling of 20210102021023 in words is "twenty trillion, two hundred ten billion, one hundred two million, twenty-one thousand, twenty-three".