202123102 has 8 divisors (see below), whose sum is σ = 319141800. Its totient is φ = 95742504.

The previous prime is 202123093. The next prime is 202123111. The reversal of 202123102 is 201321202.

It is an interprime number because it is at equal distance from previous prime (202123093) and next prime (202123111).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2659477 + ... + 2659552.

It is an arithmetic number, because the mean of its divisors is an integer number (39892725).

Almost surely, 2^202123102 is an apocalyptic number.

202123102 is a deficient number, since it is larger than the sum of its proper divisors (117018698).

202123102 is a wasteful number, since it uses less digits than its factorization.

202123102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5319050.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 202123102 is about 14217.0004571991. Note that the first 3 decimals coincide. The cubic root of 202123102 is about 586.8655974968.

Subtracting from 202123102 its sum of digits (13), we obtain a square (202123089 = 14217²).

Adding to 202123102 its reverse (201321202), we get a palindrome (403444304).

The spelling of 202123102 in words is "two hundred two million, one hundred twenty-three thousand, one hundred two".