122500900 has 18 divisors (see below), whose sum is σ = 265827170. Its totient is φ = 49000320.

The previous prime is 122500883. The next prime is 122500913. The reversal of 122500900 is 9005221.

It can be written as a sum of positive squares in 3 ways, for example, as 88804 + 122412096 = 298^2 + 11064^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 612405 + ... + 612604.

Almost surely, 2^122500900 is an apocalyptic number.

122500900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122500900 is an abundant number, since it is smaller than the sum of its proper divisors (143326270).

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

122500900 is a wasteful number, since it uses less digits than its factorization.

122500900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1225023 (or 1225016 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 122500900 is about 11068.0124683703. The cubic root of 122500900 is about 496.6454104582.

It can be divided in two parts, 122500 and 900, that multiplied together give a square (110250000 = 10500²).

The spelling of 122500900 in words is "one hundred twenty-two million, five hundred thousand, nine hundred".