121213231320111 has 8 divisors (see below), whose sum is σ = 184705876297344. Its totient is φ = 69264703611480.

The previous prime is 121213231320019. The next prime is 121213231320149. The reversal of 121213231320111 is 111023132312121.

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

It is not a de Polignac number, because 121213231320111 - 2²¹ = 121213229222959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121213231320161) 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, 2886029317125 + ... + 2886029317166.

It is an arithmetic number, because the mean of its divisors is an integer number (23088234537168).

Almost surely, 2^{121213231320111} is an apocalyptic number.

121213231320111 is a deficient number, since it is larger than the sum of its proper divisors (63492644977233).

121213231320111 is an equidigital number, since it uses as much as digits as its factorization.

121213231320111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5772058634301.

The product of its (nonzero) digits is 432, while the sum is 24.

Adding to 121213231320111 its reverse (111023132312121), we get a palindrome (232236363632232).

The spelling of 121213231320111 in words is "one hundred twenty-one trillion, two hundred thirteen billion, two hundred thirty-one million, three hundred twenty thousand, one hundred eleven".