122001655240 has 32 divisors (see below), whose sum is σ = 276090466680. Its totient is φ = 48518574592.

The previous prime is 122001655229. The next prime is 122001655261. The reversal of 122001655240 is 42556100221.

It can be written as a sum of positive squares in 4 ways, for example, as 91417941316 + 30583713924 = 302354^2 + 174882^2 .

It is a junction number, because it is equal to n+sod(n) for n = 122001655199 and 122001655208.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8808229 + ... + 8822068.

Almost surely, 2^122001655240 is an apocalyptic number.

122001655240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122001655240 is an abundant number, since it is smaller than the sum of its proper divisors (154088811440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122001655240 is a wasteful number, since it uses less digits than its factorization.

122001655240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17630481 (or 17630477 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 122001655240 its reverse (42556100221), we get a palindrome (164557755461).

The spelling of 122001655240 in words is "one hundred twenty-two billion, one million, six hundred fifty-five thousand, two hundred forty".