231121302111101 has 4 divisors (see below), whose sum is σ = 243285581169600. Its totient is φ = 218957023052604.

The previous prime is 231121302111061. The next prime is 231121302111121. The reversal of 231121302111101 is 101111203121132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 231121302111101 - 2¹⁰ = 231121302110077 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 (231121302111121) 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, 6082139529221 + ... + 6082139529258.

It is an arithmetic number, because the mean of its divisors is an integer number (60821395292400).

Almost surely, 2^{231121302111101} is an apocalyptic number.

It is an amenable number.

231121302111101 is a deficient number, since it is larger than the sum of its proper divisors (12164279058499).

231121302111101 is a wasteful number, since it uses less digits than its factorization.

231121302111101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12164279058498.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 231121302111101 its reverse (101111203121132), we get a palindrome (332232505232233).

The spelling of 231121302111101 in words is "two hundred thirty-one trillion, one hundred twenty-one billion, three hundred two million, one hundred eleven thousand, one hundred one".