1000122122121 has 8 divisors (see below), whose sum is σ = 1391474256960. Its totient is φ = 637759034352.

The previous prime is 1000122122059. The next prime is 1000122122123. The reversal of 1000122122121 is 1212212210001.

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

It is not a de Polignac number, because 1000122122121 - 2⁶ = 1000122122057 is a prime.

It is a super-3 number, since 3×1000122122121³ (a number of 37 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1000122122121.

It is not an unprimeable number, because it can be changed into a prime (1000122122123) 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, 7247261686 + ... + 7247261823.

It is an arithmetic number, because the mean of its divisors is an integer number (173934282120).

Almost surely, 2^{1000122122121} is an apocalyptic number.

It is an amenable number.

1000122122121 is a deficient number, since it is larger than the sum of its proper divisors (391352134839).

1000122122121 is a wasteful number, since it uses less digits than its factorization.

1000122122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14494523535.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1000122122121 its reverse (1212212210001), we get a palindrome (2212334332122).

The spelling of 1000122122121 in words is "one trillion, one hundred twenty-two million, one hundred twenty-two thousand, one hundred twenty-one".