121223120303012 has 192 divisors, whose sum is σ = 269229913128960. Its totient is φ = 46484025984000.

The previous prime is 121223120302939. The next prime is 121223120303017. The reversal of 121223120303012 is 210303021322121.

It is not an unprimeable number, because it can be changed into a prime (121223120303017) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 855004064 + ... + 855145832.

It is an arithmetic number, because the mean of its divisors is an integer number (1402239130880).

Almost surely, 2^{121223120303012} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121223120303012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134614956564480).

121223120303012 is an abundant number, since it is smaller than the sum of its proper divisors (148006792825948).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121223120303012 is a wasteful number, since it uses less digits than its factorization.

121223120303012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142322 (or 142320 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 121223120303012 its reverse (210303021322121), we get a palindrome (331526141625133).

The spelling of 121223120303012 in words is "one hundred twenty-one trillion, two hundred twenty-three billion, one hundred twenty million, three hundred three thousand, twelve".