1200021122010 has 64 divisors (see below), whose sum is σ = 3028204932480. Its totient is φ = 303905844480.

The previous prime is 1200021121997. The next prime is 1200021122023. The reversal of 1200021122010 is 102211200021.

It is an interprime number because it is at equal distance from previous prime (1200021121997) and next prime (1200021122023).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11252952 + ... + 11359091.

It is an arithmetic number, because the mean of its divisors is an integer number (47315702070).

Almost surely, 2^{1200021122010} is an apocalyptic number.

1200021122010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1200021122010 is an abundant number, since it is smaller than the sum of its proper divisors (1828183810470).

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

1200021122010 is a wasteful number, since it uses less digits than its factorization.

1200021122010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22612143.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1200021122010 its reverse (102211200021), we get a palindrome (1302232322031).

The spelling of 1200021122010 in words is "one trillion, two hundred billion, twenty-one million, one hundred twenty-two thousand, ten".