121442044020143 has 32 divisors (see below), whose sum is σ = 158699711987712. Its totient is φ = 90109908424800.

The previous prime is 121442044020139. The next prime is 121442044020223. The reversal of 121442044020143 is 341020440244121.

It is not a de Polignac number, because 121442044020143 - 2² = 121442044020139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121442044020943) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 153355253 + ... + 154145118.

It is an arithmetic number, because the mean of its divisors is an integer number (4959365999616).

Almost surely, 2^{121442044020143} is an apocalyptic number.

121442044020143 is a deficient number, since it is larger than the sum of its proper divisors (37257667967569).

121442044020143 is a wasteful number, since it uses less digits than its factorization.

121442044020143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307500635.

The product of its (nonzero) digits is 24576, while the sum is 32.

Adding to 121442044020143 its reverse (341020440244121), we get a palindrome (462462484264264).

The spelling of 121442044020143 in words is "one hundred twenty-one trillion, four hundred forty-two billion, forty-four million, twenty thousand, one hundred forty-three".