203101221101 has 8 divisors (see below), whose sum is σ = 215054418744. Its totient is φ = 191148697600.

The previous prime is 203101221091. The next prime is 203101221137. The reversal of 203101221101 is 101122101302.

It can be written as a sum of positive squares in 4 ways, for example, as 69968185225 + 133133035876 = 264515^2 + 364874^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203101221101 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 (203101227101) 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, 535901 + ... + 832701.

It is an arithmetic number, because the mean of its divisors is an integer number (26881802343).

Almost surely, 2^203101221101 is an apocalyptic number.

It is an amenable number.

203101221101 is a deficient number, since it is larger than the sum of its proper divisors (11953197643).

203101221101 is a wasteful number, since it uses less digits than its factorization.

203101221101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337071.

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

Adding to 203101221101 its reverse (101122101302), we get a palindrome (304223322403).

The spelling of 203101221101 in words is "two hundred three billion, one hundred one million, two hundred twenty-one thousand, one hundred one".