122220475740 has 72 divisors (see below), whose sum is σ = 404438671728. Its totient is φ = 29629205760.

The previous prime is 122220475711. The next prime is 122220475747. The reversal of 122220475740 is 47574022221.

122220475740 is a `hidden beast` number, since 1 + 2 + 22 + 20 + 47 + 574 + 0 = 666.

It is a super-2 number, since 2×122220475740² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 122220475695 and 122220475704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122220475747) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30861777 + ... + 30865736.

It is an arithmetic number, because the mean of its divisors is an integer number (5617203774).

Almost surely, 2^122220475740 is an apocalyptic number.

122220475740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122220475740 is an abundant number, since it is smaller than the sum of its proper divisors (282218195988).

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

122220475740 is a wasteful number, since it uses less digits than its factorization.

122220475740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61727539 (or 61727534 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 36.

Adding to 122220475740 its reverse (47574022221), we get a palindrome (169794497961).

The spelling of 122220475740 in words is "one hundred twenty-two billion, two hundred twenty million, four hundred seventy-five thousand, seven hundred forty".