121112121110001 has 32 divisors (see below), whose sum is σ = 192630213089280. Its totient is φ = 66179223352704.

The previous prime is 121112121109937. The next prime is 121112121110003. The reversal of 121112121110001 is 100011121211121.

It is not a de Polignac number, because 121112121110001 - 2⁶ = 121112121109937 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121112121110003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33717300 + ... + 37135973.

It is an arithmetic number, because the mean of its divisors is an integer number (6019694159040).

Almost surely, 2^{121112121110001} is an apocalyptic number.

It is an amenable number.

121112121110001 is a deficient number, since it is larger than the sum of its proper divisors (71518091979279).

121112121110001 is a wasteful number, since it uses less digits than its factorization.

121112121110001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70856845.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 121112121110001 its reverse (100011121211121), we get a palindrome (221123242321122).

The spelling of 121112121110001 in words is "one hundred twenty-one trillion, one hundred twelve billion, one hundred twenty-one million, one hundred ten thousand, one".