121221231113101 has 16 divisors (see below), whose sum is σ = 143061237669888. Its totient is φ = 100514413810800.

The previous prime is 121221231113051. The next prime is 121221231113119. The reversal of 121221231113101 is 101311132122121.

It is a cyclic number.

It is not a de Polignac number, because 121221231113101 - 2¹⁵ = 121221231080333 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 (121221231113161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104308195 + ... + 105463936.

It is an arithmetic number, because the mean of its divisors is an integer number (8941327354368).

Almost surely, 2^{121221231113101} is an apocalyptic number.

It is an amenable number.

121221231113101 is a deficient number, since it is larger than the sum of its proper divisors (21840006556787).

121221231113101 is a wasteful number, since it uses less digits than its factorization.

121221231113101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209774832.

The product of its (nonzero) digits is 144, while the sum is 22.

Adding to 121221231113101 its reverse (101311132122121), we get a palindrome (222532363235222).

The spelling of 121221231113101 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, two hundred thirty-one million, one hundred thirteen thousand, one hundred one".