203122101101 has 4 divisors (see below), whose sum is σ = 203697518172. Its totient is φ = 202546684032.

The previous prime is 203122101059. The next prime is 203122101103. The reversal of 203122101101 is 101101221302.

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

It can be written as a sum of positive squares in 2 ways, for example, as 92599098601 + 110523002500 = 304301^2 + 332450^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203122101101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203122101103) 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, 287708006 + ... + 287708711.

It is an arithmetic number, because the mean of its divisors is an integer number (50924379543).

Almost surely, 2^203122101101 is an apocalyptic number.

It is an amenable number.

203122101101 is a deficient number, since it is larger than the sum of its proper divisors (575417071).

203122101101 is an equidigital number, since it uses as much as digits as its factorization.

203122101101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575417070.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 203122101101 its reverse (101101221302), we get a palindrome (304223322403).

The spelling of 203122101101 in words is "two hundred three billion, one hundred twenty-two million, one hundred one thousand, one hundred one".