121100220143 has 16 divisors (see below), whose sum is σ = 145696235520. Its totient is φ = 98329082976.

The previous prime is 121100220139. The next prime is 121100220161. The reversal of 121100220143 is 341022001121.

It is a cyclic number.

It is not a de Polignac number, because 121100220143 - 2² = 121100220139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121100220133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2068946 + ... + 2126672.

It is an arithmetic number, because the mean of its divisors is an integer number (9106014720).

Almost surely, 2^121100220143 is an apocalyptic number.

121100220143 is a deficient number, since it is larger than the sum of its proper divisors (24596015377).

121100220143 is a wasteful number, since it uses less digits than its factorization.

121100220143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73526.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 121100220143 its reverse (341022001121), we get a palindrome (462122221264).

The spelling of 121100220143 in words is "one hundred twenty-one billion, one hundred million, two hundred twenty thousand, one hundred forty-three".