121023321100 has 144 divisors (see below), whose sum is σ = 298616887296. Its totient is φ = 42174144000.

The previous prime is 121023321071. The next prime is 121023321119. The reversal of 121023321100 is 1123320121.

121023321100 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3495072 + ... + 3529528.

It is an arithmetic number, because the mean of its divisors is an integer number (2073728384).

Almost surely, 2^121023321100 is an apocalyptic number.

121023321100 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 121023321100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149308443648).

121023321100 is an abundant number, since it is smaller than the sum of its proper divisors (177593566196).

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

121023321100 is a wasteful number, since it uses less digits than its factorization.

121023321100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34616 (or 34609 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 121023321100 its reverse (1123320121), we get a palindrome (122146641221).

The spelling of 121023321100 in words is "one hundred twenty-one billion, twenty-three million, three hundred twenty-one thousand, one hundred".