202102101001023 has 16 divisors (see below), whose sum is σ = 272956738174560. Its totient is φ = 132996204729344.

The previous prime is 202102101000977. The next prime is 202102101001039. The reversal of 202102101001023 is 320100101201202.

It is a cyclic number.

It is not a de Polignac number, because 202102101001023 - 2³² = 202097806033727 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202102101000993 and 202102101001011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202102101009023) 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, 638068236 + ... + 638384897.

It is an arithmetic number, because the mean of its divisors is an integer number (17059796135910).

Almost surely, 2^{202102101001023} is an apocalyptic number.

202102101001023 is a deficient number, since it is larger than the sum of its proper divisors (70854637173537).

202102101001023 is a wasteful number, since it uses less digits than its factorization.

202102101001023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276453818.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 202102101001023 its reverse (320100101201202), we get a palindrome (522202202202225).

The spelling of 202102101001023 in words is "two hundred two trillion, one hundred two billion, one hundred one million, one thousand, twenty-three".