122220403220 has 24 divisors (see below), whose sum is σ = 256734871008. Its totient is φ = 48874442400.

The previous prime is 122220403153. The next prime is 122220403223. The reversal of 122220403220 is 22304022221.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 122220403192 and 122220403201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122220403223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 784226 + ... + 927065.

It is an arithmetic number, because the mean of its divisors is an integer number (10697286292).

Almost surely, 2^122220403220 is an apocalyptic number.

122220403220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122220403220 is an abundant number, since it is smaller than the sum of its proper divisors (134514467788).

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

122220403220 is a wasteful number, since it uses less digits than its factorization.

122220403220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1714871 (or 1714869 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 122220403220 its reverse (22304022221), we get a palindrome (144524425441).

The spelling of 122220403220 in words is "one hundred twenty-two billion, two hundred twenty million, four hundred three thousand, two hundred twenty".