121222428600 has 384 divisors, whose sum is σ = 473799674880. Its totient is φ = 24952320000.

The previous prime is 121222428557. The next prime is 121222428611. The reversal of 121222428600 is 6824222121.

121222428600 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2211525 + ... + 2265675.

It is an arithmetic number, because the mean of its divisors is an integer number (1233853320).

Almost surely, 2^121222428600 is an apocalyptic number.

121222428600 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 121222428600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236899837440).

121222428600 is an abundant number, since it is smaller than the sum of its proper divisors (352577246280).

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

121222428600 is a wasteful number, since it uses less digits than its factorization.

121222428600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54231 (or 54222 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The spelling of 121222428600 in words is "one hundred twenty-one billion, two hundred twenty-two million, four hundred twenty-eight thousand, six hundred".