122401265143 has 4 divisors (see below), whose sum is σ = 123022591560. Its totient is φ = 121779938728.

The previous prime is 122401265111. The next prime is 122401265159. The reversal of 122401265143 is 341562104221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 122401265143 - 2⁵ = 122401265111 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 (122401265443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 310662913 + ... + 310663306.

It is an arithmetic number, because the mean of its divisors is an integer number (30755647890).

Almost surely, 2^122401265143 is an apocalyptic number.

122401265143 is a deficient number, since it is larger than the sum of its proper divisors (621326417).

122401265143 is an equidigital number, since it uses as much as digits as its factorization.

122401265143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621326416.

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 122401265143 its reverse (341562104221), we get a palindrome (463963369364).

The spelling of 122401265143 in words is "one hundred twenty-two billion, four hundred one million, two hundred sixty-five thousand, one hundred forty-three".