203101112211121 has 4 divisors (see below), whose sum is σ = 215048236458852. Its totient is φ = 191153987963392.

The previous prime is 203101112211097. The next prime is 203101112211157. The reversal of 203101112211121 is 121112211101302.

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 142595505464896 + 60505606746225 = 11941336^2 + 7778535^2 .

It is a cyclic number.

It is not a de Polignac number, because 203101112211121 - 2³¹ = 203098964727473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203101812211121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5973562123840 + ... + 5973562123873.

It is an arithmetic number, because the mean of its divisors is an integer number (53762059114713).

Almost surely, 2^{203101112211121} is an apocalyptic number.

It is an amenable number.

203101112211121 is a deficient number, since it is larger than the sum of its proper divisors (11947124247731).

203101112211121 is a wasteful number, since it uses less digits than its factorization.

203101112211121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11947124247730.

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 203101112211121 its reverse (121112211101302), we get a palindrome (324213323312423).

The spelling of 203101112211121 in words is "two hundred three trillion, one hundred one billion, one hundred twelve million, two hundred eleven thousand, one hundred twenty-one".