121322153 has 4 divisors (see below), whose sum is σ = 121416708. Its totient is φ = 121227600.

The previous prime is 121322137. The next prime is 121322161. The reversal of 121322153 is 351223121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 351223121 = 397 ⋅884693.

It can be written as a sum of positive squares in 2 ways, for example, as 47997184 + 73324969 = 6928^2 + 8563^2 .

It is a cyclic number.

It is not a de Polignac number, because 121322153 - 2⁴ = 121322137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121322053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45326 + ... + 47927.

It is an arithmetic number, because the mean of its divisors is an integer number (30354177).

Almost surely, 2^121322153 is an apocalyptic number.

It is an amenable number.

121322153 is a deficient number, since it is larger than the sum of its proper divisors (94555).

121322153 is an equidigital number, since it uses as much as digits as its factorization.

121322153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94554.

The product of its digits is 360, while the sum is 20.

The square root of 121322153 is about 11014.6335844639. The cubic root of 121322153 is about 495.0473076576.

Adding to 121322153 its reverse (351223121), we get a palindrome (472545274).

The spelling of 121322153 in words is "one hundred twenty-one million, three hundred twenty-two thousand, one hundred fifty-three".