10202101123 has 4 divisors (see below), whose sum is σ = 10325018088. Its totient is φ = 10079184160.

The previous prime is 10202101121. The next prime is 10202101163. The reversal of 10202101123 is 32110120201.

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

It is a cyclic number.

It is not a de Polignac number, because 10202101123 - 2¹ = 10202101121 is a prime.

It is a super-2 number, since 2×10202101123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10202101121) 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, 61458358 + ... + 61458523.

It is an arithmetic number, because the mean of its divisors is an integer number (2581254522).

Almost surely, 2^10202101123 is an apocalyptic number.

10202101123 is a deficient number, since it is larger than the sum of its proper divisors (122916965).

10202101123 is an equidigital number, since it uses as much as digits as its factorization.

10202101123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122916964.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 10202101123 its reverse (32110120201), we get a palindrome (42312221324).

The spelling of 10202101123 in words is "ten billion, two hundred two million, one hundred one thousand, one hundred twenty-three".