1001200121106 has 32 divisors (see below), whose sum is σ = 2003785967808. Its totient is φ = 333502498560.

The previous prime is 1001200121099. The next prime is 1001200121111. The reversal of 1001200121106 is 6011210021001.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108338646 + ... + 108347886.

It is an arithmetic number, because the mean of its divisors is an integer number (62618311494).

Almost surely, 2^{1001200121106} is an apocalyptic number.

1001200121106 is an abundant number, since it is smaller than the sum of its proper divisors (1002585846702).

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

1001200121106 is a wasteful number, since it uses less digits than its factorization.

1001200121106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19786.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 1001200121106 its reverse (6011210021001), we get a palindrome (7012410142107).

The spelling of 1001200121106 in words is "one trillion, one billion, two hundred million, one hundred twenty-one thousand, one hundred six".