121123343000 has 192 divisors, whose sum is σ = 320248861920. Its totient is φ = 42522816000.

The previous prime is 121123342981. The next prime is 121123343009. The reversal of 121123343000 is 343321121.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121123343009) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9244454 + ... + 9257546.

Almost surely, 2^121123343000 is an apocalyptic number.

121123343000 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 121123343000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160124430960).

121123343000 is an abundant number, since it is smaller than the sum of its proper divisors (199125518920).

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

121123343000 is a wasteful number, since it uses less digits than its factorization.

121123343000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13183 (or 13140 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 121123343000 its reverse (343321121), we get a palindrome (121466664121).

The spelling of 121123343000 in words is "one hundred twenty-one billion, one hundred twenty-three million, three hundred forty-three thousand".