1200212000121 has 8 divisors (see below), whose sum is σ = 1600287887520. Its totient is φ = 800138723072.

The previous prime is 1200212000111. The next prime is 1200212000131. The reversal of 1200212000121 is 1210002120021.

It is an interprime number because it is at equal distance from previous prime (1200212000111) and next prime (1200212000131).

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 1200212000121 - 2⁵ = 1200212000089 is a prime.

It is a super-3 number, since 3×1200212000121³ (a number of 37 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1200212000097 and 1200212000106.

It is not an unprimeable number, because it can be changed into a prime (1200212000111) 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, 1069306 + ... + 1882508.

It is an arithmetic number, because the mean of its divisors is an integer number (200035985940).

Almost surely, 2^{1200212000121} is an apocalyptic number.

It is an amenable number.

1200212000121 is a deficient number, since it is larger than the sum of its proper divisors (400075887399).

1200212000121 is an equidigital number, since it uses as much as digits as its factorization.

1200212000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1305175.

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

Adding to 1200212000121 its reverse (1210002120021), we get a palindrome (2410214120142).

The spelling of 1200212000121 in words is "one trillion, two hundred billion, two hundred twelve million, one hundred twenty-one", and thus it is an aban number.