122408281636 has 12 divisors (see below), whose sum is σ = 214898886412. Its totient is φ = 61008599808.

The previous prime is 122408281631. The next prime is 122408281643. The reversal of 122408281636 is 636182804221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 64462163236 + 57946118400 = 253894^2 + 240720^2 .

It is a junction number, because it is equal to n+sod(n) for n = 122408281592 and 122408281601.

It is not an unprimeable number, because it can be changed into a prime (122408281631) 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, 48883845 + ... + 48886348.

Almost surely, 2^122408281636 is an apocalyptic number.

It is an amenable number.

122408281636 is a deficient number, since it is larger than the sum of its proper divisors (92490604776).

122408281636 is a wasteful number, since it uses less digits than its factorization.

122408281636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97770510 (or 97770508 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 43.

The spelling of 122408281636 in words is "one hundred twenty-two billion, four hundred eight million, two hundred eighty-one thousand, six hundred thirty-six".