122700681728 has 20 divisors (see below), whose sum is σ = 245161714710. Its totient is φ = 61350340608.

The previous prime is 122700681709. The next prime is 122700681743. The reversal of 122700681728 is 827186007221.

It can be written as a sum of positive squares in only one way, i.e., 74743185664 + 47957496064 = 273392^2 + 218992^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119824373 + ... + 119825396.

Almost surely, 2^122700681728 is an apocalyptic number.

It is an amenable number.

122700681728 is a deficient number, since it is larger than the sum of its proper divisors (122461032982).

122700681728 is an frugal number, since it uses more digits than its factorization.

122700681728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239649787 (or 239649771 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 44.

Adding to 122700681728 its reverse (827186007221), we get a palindrome (949886688949).

The spelling of 122700681728 in words is "one hundred twenty-two billion, seven hundred million, six hundred eighty-one thousand, seven hundred twenty-eight".