1000122120012 has 24 divisors (see below), whose sum is σ = 2341922979312. Its totient is φ = 332187654400.

The previous prime is 1000122119951. The next prime is 1000122120017. The reversal of 1000122120012 is 2100212210001.

It is a super-3 number, since 3×1000122120012³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 1000122120012.

It is not an unprimeable number, because it can be changed into a prime (1000122120017) 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, 148294689 + ... + 148301432.

It is an arithmetic number, because the mean of its divisors is an integer number (97580124138).

Almost surely, 2^{1000122120012} is an apocalyptic number.

1000122120012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1000122120012 is an abundant number, since it is smaller than the sum of its proper divisors (1341800859300).

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

1000122120012 is a wasteful number, since it uses less digits than its factorization.

1000122120012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296596409 (or 296596407 counting only the distinct ones).

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

Adding to 1000122120012 its reverse (2100212210001), we get a palindrome (3100334330013).

The spelling of 1000122120012 in words is "one trillion, one hundred twenty-two million, one hundred twenty thousand, twelve".