121223404322120 has 64 divisors (see below), whose sum is σ = 276092926038720. Its totient is φ = 47895765560064.

The previous prime is 121223404322101. The next prime is 121223404322123. The reversal of 121223404322120 is 21223404322121.

It is a super-2 number, since 2×121223404322120² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121223404322123) 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, 13380434 + ... + 20530046.

It is an arithmetic number, because the mean of its divisors is an integer number (4313951969355).

Almost surely, 2^{121223404322120} is an apocalyptic number.

121223404322120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121223404322120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138046463019360).

121223404322120 is an abundant number, since it is smaller than the sum of its proper divisors (154869521716600).

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

121223404322120 is a wasteful number, since it uses less digits than its factorization.

121223404322120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7154814 (or 7154810 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 121223404322120 its reverse (21223404322121), we get a palindrome (142446808644241).

Subtracting from 121223404322120 its reverse (21223404322121), we obtain a palindrome (99999999999999).

The spelling of 121223404322120 in words is "one hundred twenty-one trillion, two hundred twenty-three billion, four hundred four million, three hundred twenty-two thousand, one hundred twenty".