121822153 has 8 divisors (see below), whose sum is σ = 129106440. Its totient is φ = 114551040.

The previous prime is 121822067. The next prime is 121822159. The reversal of 121822153 is 351228121.

It can be written as a sum of positive squares in 4 ways, for example, as 47224384 + 74597769 = 6872^2 + 8637^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121822153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121822159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20883 + ... + 26071.

It is an arithmetic number, because the mean of its divisors is an integer number (16138305).

Almost surely, 2^121822153 is an apocalyptic number.

It is an amenable number.

121822153 is a deficient number, since it is larger than the sum of its proper divisors (7284287).

121822153 is a wasteful number, since it uses less digits than its factorization.

121822153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6587.

The product of its digits is 960, while the sum is 25.

The square root of 121822153 is about 11037.3073256116. The cubic root of 121822153 is about 495.7264482426.

The spelling of 121822153 in words is "one hundred twenty-one million, eight hundred twenty-two thousand, one hundred fifty-three".