122221020 has 24 divisors (see below), whose sum is σ = 342219024. Its totient is φ = 32592256.

The previous prime is 122221019. The next prime is 122221039. The reversal of 122221020 is 20122221.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 122220987 and 122221005.

It is a congruent number.

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, 1018449 + ... + 1018568.

It is an arithmetic number, because the mean of its divisors is an integer number (14259126).

Almost surely, 2^122221020 is an apocalyptic number.

122221020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122221020 is an abundant number, since it is smaller than the sum of its proper divisors (219998004).

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

122221020 is a wasteful number, since it uses less digits than its factorization.

122221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2037029 (or 2037027 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 122221020 is about 11055.3615951718. The cubic root of 122221020 is about 496.2668904867.

Adding to 122221020 its reverse (20122221), we get a palindrome (142343241).

The spelling of 122221020 in words is "one hundred twenty-two million, two hundred twenty-one thousand, twenty".