202120101103123 has 8 divisors (see below), whose sum is σ = 230994667287648. Its totient is φ = 173245601425344.

The previous prime is 202120101103009. The next prime is 202120101103147. The reversal of 202120101103123 is 321301101021202.

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

It is a de Polignac number, because none of the positive numbers 2^k-202120101103123 is a prime.

It is a super-2 number, since 2×202120101103123² (a number of 29 digits) contains 22 as substring.

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 202120101103123.

It is not an unprimeable number, because it can be changed into a prime (202120101103153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9934786 + ... + 22426327.

It is an arithmetic number, because the mean of its divisors is an integer number (28874333410956).

Almost surely, 2^{202120101103123} is an apocalyptic number.

202120101103123 is a deficient number, since it is larger than the sum of its proper divisors (28874566184525).

202120101103123 is an equidigital number, since it uses as much as digits as its factorization.

202120101103123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33253373.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 202120101103123 its reverse (321301101021202), we get a palindrome (523421202124325).

The spelling of 202120101103123 in words is "two hundred two trillion, one hundred twenty billion, one hundred one million, one hundred three thousand, one hundred twenty-three".