122221220020220 has 24 divisors (see below), whose sum is σ = 256841939133024. Its totient is φ = 48854701895616.

The previous prime is 122221220020199. The next prime is 122221220020261. The reversal of 122221220020220 is 22020022122221.

It is a super-2 number, since 2×122221220020220² (a number of 29 digits) contains 22 as substring.

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 = 122221220020192 and 122221220020201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2111602367 + ... + 2111660246.

It is an arithmetic number, because the mean of its divisors is an integer number (10701747463876).

Almost surely, 2^{122221220020220} is an apocalyptic number.

122221220020220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122221220020220 is an abundant number, since it is smaller than the sum of its proper divisors (134620719112804).

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

122221220020220 is a wasteful number, since it uses less digits than its factorization.

122221220020220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4223264069 (or 4223264067 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 122221220020220 its reverse (22020022122221), we get a palindrome (144241242142441).

The spelling of 122221220020220 in words is "one hundred twenty-two trillion, two hundred twenty-one billion, two hundred twenty million, twenty thousand, two hundred twenty".