1200012121112 has 48 divisors (see below), whose sum is σ = 2630935062360. Its totient is φ = 511626157056.

The previous prime is 1200012121031. The next prime is 1200012121159. The reversal of 1200012121112 is 2111212100021.

It is a super-2 number, since 2×1200012121112² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 7855058 + ... + 8006369.

Almost surely, 2^{1200012121112} is an apocalyptic number.

It is an amenable number.

1200012121112 is an abundant number, since it is smaller than the sum of its proper divisors (1430922941248).

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

1200012121112 is a wasteful number, since it uses less digits than its factorization.

1200012121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15861640 (or 15861629 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1200012121112 its reverse (2111212100021), we get a palindrome (3311224221133).

The spelling of 1200012121112 in words is "one trillion, two hundred billion, twelve million, one hundred twenty-one thousand, one hundred twelve".