1220122140240 has 40 divisors (see below), whose sum is σ = 3782378635488. Its totient is φ = 325365904000.

The previous prime is 1220122140203. The next prime is 1220122140241. The reversal of 1220122140240 is 420412210221.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220122140241) 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, 2541920886 + ... + 2541921365.

Almost surely, 2^{1220122140240} is an apocalyptic number.

1220122140240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220122140240 is an abundant number, since it is smaller than the sum of its proper divisors (2562256495248).

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

1220122140240 is a wasteful number, since it uses less digits than its factorization.

1220122140240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5083842267 (or 5083842261 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 1220122140240 its reverse (420412210221), we get a palindrome (1640534350461).

The spelling of 1220122140240 in words is "one trillion, two hundred twenty billion, one hundred twenty-two million, one hundred forty thousand, two hundred forty".