122744128109 has 8 divisors (see below), whose sum is σ = 124833474240. Its totient is φ = 120655080000.

The previous prime is 122744128103. The next prime is 122744128141. The reversal of 122744128109 is 901821447221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122744128109 is a prime.

It is a super-2 number, since 2×122744128109² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122744128103) 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, 853784 + ... + 987134.

It is an arithmetic number, because the mean of its divisors is an integer number (15604184280).

Almost surely, 2^122744128109 is an apocalyptic number.

It is an amenable number.

122744128109 is a deficient number, since it is larger than the sum of its proper divisors (2089346131).

122744128109 is a wasteful number, since it uses less digits than its factorization.

122744128109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149011.

The product of its (nonzero) digits is 64512, while the sum is 41.

The spelling of 122744128109 in words is "one hundred twenty-two billion, seven hundred forty-four million, one hundred twenty-eight thousand, one hundred nine".