1000001122121 has 8 divisors (see below), whose sum is σ = 1005332196000. Its totient is φ = 994675631040.

The previous prime is 1000001122097. The next prime is 1000001122163. The reversal of 1000001122121 is 1212211000001.

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

It is a cyclic number.

It is not a de Polignac number, because 1000001122121 - 2³⁴ = 982821252937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000001322121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1036256 + ... + 1753233.

It is an arithmetic number, because the mean of its divisors is an integer number (125666524500).

Almost surely, 2^{1000001122121} is an apocalyptic number.

It is an amenable number.

1000001122121 is a deficient number, since it is larger than the sum of its proper divisors (5331073879).

1000001122121 is a wasteful number, since it uses less digits than its factorization.

1000001122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2791399.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1000001122121 its reverse (1212211000001), we get a palindrome (2212212122122).

The spelling of 1000001122121 in words is "one trillion, one million, one hundred twenty-two thousand, one hundred twenty-one".