121443153 has 8 divisors (see below), whose sum is σ = 174379968. Its totient is φ = 74734224.

The previous prime is 121443103. The next prime is 121443163. The reversal of 121443153 is 351344121.

It is a happy number.

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

It is not a de Polignac number, because 121443153 - 2⁹ = 121442641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121443103) 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, 1556925 + ... + 1557002.

It is an arithmetic number, because the mean of its divisors is an integer number (21797496).

Almost surely, 2^121443153 is an apocalyptic number.

121443153 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

121443153 is a deficient number, since it is larger than the sum of its proper divisors (52936815).

121443153 is a wasteful number, since it uses less digits than its factorization.

121443153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3113943.

The product of its digits is 1440, while the sum is 24.

The square root of 121443153 is about 11020.1249085480. The cubic root of 121443153 is about 495.2118305687.

Adding to 121443153 its reverse (351344121), we get a palindrome (472787274).

The spelling of 121443153 in words is "one hundred twenty-one million, four hundred forty-three thousand, one hundred fifty-three".