122543253111 has 8 divisors (see below), whose sum is σ = 163606847344. Its totient is φ = 81587580480.

The previous prime is 122543253073. The next prime is 122543253113. The reversal of 122543253111 is 111352345221.

It is a happy number.

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

It is not a de Polignac number, because 122543253111 - 2²⁵ = 122509698679 is a prime.

It is a super-2 number, since 2×122543253111² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122543253113) 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, 26977750 + ... + 26982291.

It is an arithmetic number, because the mean of its divisors is an integer number (20450855918).

Almost surely, 2^122543253111 is an apocalyptic number.

122543253111 is a deficient number, since it is larger than the sum of its proper divisors (41063594233).

122543253111 is an equidigital number, since it uses as much as digits as its factorization.

122543253111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53960801.

The product of its digits is 7200, while the sum is 30.

Adding to 122543253111 its reverse (111352345221), we get a palindrome (233895598332).

The spelling of 122543253111 in words is "one hundred twenty-two billion, five hundred forty-three million, two hundred fifty-three thousand, one hundred eleven".