1200010122 has 24 divisors (see below), whose sum is σ = 2670294276. Its totient is φ = 389192256.

The previous prime is 1200010069. The next prime is 1200010129. The reversal of 1200010122 is 2210100021.

It can be written as a sum of positive squares in 2 ways, for example, as 968392161 + 231617961 = 31119^2 + 15219^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1200010129) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 900243 + ... + 901574.

Almost surely, 2^1200010122 is an apocalyptic number.

1200010122 is an abundant number, since it is smaller than the sum of its proper divisors (1470284154).

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

1200010122 is a wasteful number, since it uses less digits than its factorization.

1200010122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1801862 (or 1801859 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1200010122 is about 34641.1622495551. The cubic root of 1200010122 is about 1062.6615570159.

Adding to 1200010122 its reverse (2210100021), we get a palindrome (3410110143).

It can be divided in two parts, 12000 and 10122, that added together give a palindrome (22122).

The spelling of 1200010122 in words is "one billion, two hundred million, ten thousand, one hundred twenty-two".