121143355 has 8 divisors (see below), whose sum is σ = 145440864. Its totient is φ = 96868800.

The previous prime is 121143349. The next prime is 121143361. The reversal of 121143355 is 553341121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (121143349) and next prime (121143361).

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

It is not a de Polignac number, because 121143355 - 2⁷ = 121143227 is a prime.

It is a super-3 number, since 3×121143355³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9615 + ... + 18295.

It is an arithmetic number, because the mean of its divisors is an integer number (18180108).

Almost surely, 2^121143355 is an apocalyptic number.

121143355 is a deficient number, since it is larger than the sum of its proper divisors (24297509).

121143355 is an equidigital number, since it uses as much as digits as its factorization.

121143355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11477.

The product of its digits is 1800, while the sum is 25.

The square root of 121143355 is about 11006.5142075046. The cubic root of 121143355 is about 494.8039968138.

Adding to 121143355 its reverse (553341121), we get a palindrome (674484476).

The spelling of 121143355 in words is "one hundred twenty-one million, one hundred forty-three thousand, three hundred fifty-five".