121722048 has 224 divisors, whose sum is σ = 424281600. Its totient is φ = 33481728.

The previous prime is 121722047. The next prime is 121722067. The reversal of 121722048 is 840227121.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (121722047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 350611 + ... + 350957.

Almost surely, 2^121722048 is an apocalyptic number.

121722048 is a gapful number since it is divisible by the number (18) 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 121722048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212140800).

121722048 is an abundant number, since it is smaller than the sum of its proper divisors (302559552).

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

121722048 is a wasteful number, since it uses less digits than its factorization.

121722048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404 (or 388 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 121722048 is about 11032.7715466242. The cubic root of 121722048 is about 495.5906264899.

Adding to 121722048 its reverse (840227121), we get a palindrome (961949169).

The spelling of 121722048 in words is "one hundred twenty-one million, seven hundred twenty-two thousand, forty-eight".