121223311230 has 128 divisors (see below), whose sum is σ = 337810176000. Its totient is φ = 27268959744.

The previous prime is 121223311229. The next prime is 121223311243. The reversal of 121223311230 is 32113322121.

It is a super-2 number, since 2×121223311230² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 121223311197 and 121223311206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3392839 + ... + 3428381.

It is an arithmetic number, because the mean of its divisors is an integer number (2639142000).

Almost surely, 2^121223311230 is an apocalyptic number.

121223311230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 121223311230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168905088000).

121223311230 is an abundant number, since it is smaller than the sum of its proper divisors (216586864770).

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

121223311230 is a wasteful number, since it uses less digits than its factorization.

121223311230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35818.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 121223311230 its reverse (32113322121), we get a palindrome (153336633351).

The spelling of 121223311230 in words is "one hundred twenty-one billion, two hundred twenty-three million, three hundred eleven thousand, two hundred thirty".