1001200121122 has 8 divisors (see below), whose sum is σ = 1503002587500. Its totient is φ = 500199258624.

The previous prime is 1001200121113. The next prime is 1001200121137. The reversal of 1001200121122 is 2211210021001.

It can be written as a sum of positive squares in 2 ways, for example, as 885912030441 + 115288090681 = 941229^2 + 339541^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 200397847 + ... + 200402842.

Almost surely, 2^{1001200121122} is an apocalyptic number.

1001200121122 is a deficient number, since it is larger than the sum of its proper divisors (501802466378).

1001200121122 is a wasteful number, since it uses less digits than its factorization.

1001200121122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400801940.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1001200121122 its reverse (2211210021001), we get a palindrome (3212410142123).

The spelling of 1001200121122 in words is "one trillion, one billion, two hundred million, one hundred twenty-one thousand, one hundred twenty-two".