121223313113 has 16 divisors (see below), whose sum is σ = 144757088256. Its totient is φ = 99255618000.

The previous prime is 121223313103. The next prime is 121223313137. The reversal of 121223313113 is 311313322121.

It is not a de Polignac number, because 121223313113 - 2²⁶ = 121156204249 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121223313103) 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, 380381 + ... + 622202.

It is an arithmetic number, because the mean of its divisors is an integer number (9047318016).

Almost surely, 2^121223313113 is an apocalyptic number.

It is an amenable number.

121223313113 is a deficient number, since it is larger than the sum of its proper divisors (23533775143).

121223313113 is a wasteful number, since it uses less digits than its factorization.

121223313113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1003364.

The product of its digits is 648, while the sum is 23.

Adding to 121223313113 its reverse (311313322121), we get a palindrome (432536635234).

The spelling of 121223313113 in words is "one hundred twenty-one billion, two hundred twenty-three million, three hundred thirteen thousand, one hundred thirteen".