121210143 has 8 divisors (see below), whose sum is σ = 162078000. Its totient is φ = 80574528.

The previous prime is 121210081. The next prime is 121210157. The reversal of 121210143 is 341012121.

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

It is not a de Polignac number, because 121210143 - 2¹⁶ = 121144607 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121210183) 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, 56838 + ... + 58931.

It is an arithmetic number, because the mean of its divisors is an integer number (20259750).

Almost surely, 2^121210143 is an apocalyptic number.

121210143 is a deficient number, since it is larger than the sum of its proper divisors (40867857).

121210143 is a wasteful number, since it uses less digits than its factorization.

121210143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116121.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 121210143 is about 11009.5478108776. The cubic root of 121210143 is about 494.8949108611.

Adding to 121210143 its reverse (341012121), we get a palindrome (462222264).

The spelling of 121210143 in words is "one hundred twenty-one million, two hundred ten thousand, one hundred forty-three".