20202112203123 has 4 divisors (see below), whose sum is σ = 26936149604168. Its totient is φ = 13468074802080.

The previous prime is 20202112203121. The next prime is 20202112203157. The reversal of 20202112203123 is 32130221120202.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20202112203123 - 2¹ = 20202112203121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20202112203123.

It is not an unprimeable number, because it can be changed into a prime (20202112203121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3367018700518 + ... + 3367018700523.

It is an arithmetic number, because the mean of its divisors is an integer number (6734037401042).

Almost surely, 2^{20202112203123} is an apocalyptic number.

20202112203123 is a deficient number, since it is larger than the sum of its proper divisors (6734037401045).

20202112203123 is an equidigital number, since it uses as much as digits as its factorization.

20202112203123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6734037401044.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 20202112203123 its reverse (32130221120202), we get a palindrome (52332333323325).

The spelling of 20202112203123 in words is "twenty trillion, two hundred two billion, one hundred twelve million, two hundred three thousand, one hundred twenty-three".