122020200 has 72 divisors (see below), whose sum is σ = 409790550. Its totient is φ = 32538240.

The previous prime is 122020193. The next prime is 122020211. The reversal of 122020200 is 2020221.

It can be written as a sum of positive squares in 3 ways, for example, as 112911876 + 9108324 = 10626^2 + 3018^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a nialpdrome in base 15.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 32095 + ... + 35694.

Almost surely, 2^122020200 is an apocalyptic number.

122020200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122020200 is an abundant number, since it is smaller than the sum of its proper divisors (287770350).

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

122020200 is a wasteful number, since it uses less digits than its factorization.

122020200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67811 (or 67799 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 122020200 is about 11046.2753903748. The cubic root of 122020200 is about 495.9949379470.

Adding to 122020200 its reverse (2020221), we get a palindrome (124040421).

The spelling of 122020200 in words is "one hundred twenty-two million, twenty thousand, two hundred".