122543644101 has 32 divisors (see below), whose sum is σ = 184302397440. Its totient is φ = 71965603584.

The previous prime is 122543644061. The next prime is 122543644159. The reversal of 122543644101 is 101446345221.

It is a happy number.

It is not a de Polignac number, because 122543644101 - 2⁶ = 122543644037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122543644001) 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, 681405 + ... + 842258.

It is an arithmetic number, because the mean of its divisors is an integer number (5759449920).

Almost surely, 2^122543644101 is an apocalyptic number.

It is an amenable number.

122543644101 is a deficient number, since it is larger than the sum of its proper divisors (61758753339).

122543644101 is a wasteful number, since it uses less digits than its factorization.

122543644101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1523785.

The product of its (nonzero) digits is 23040, while the sum is 33.

Adding to 122543644101 its reverse (101446345221), we get a palindrome (223989989322).

The spelling of 122543644101 in words is "one hundred twenty-two billion, five hundred forty-three million, six hundred forty-four thousand, one hundred one".