1200121010112 has 112 divisors (see below), whose sum is σ = 3452971727520. Its totient is φ = 366332608512.

The previous prime is 1200121010111. The next prime is 1200121010113. The reversal of 1200121010112 is 2110101210021.

It is an interprime number because it is at equal distance from previous prime (1200121010111) and next prime (1200121010113).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200121010111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4847937 + ... + 5089472.

It is an arithmetic number, because the mean of its divisors is an integer number (30830104710).

Almost surely, 2^{1200121010112} is an apocalyptic number.

1200121010112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1200121010112 is an abundant number, since it is smaller than the sum of its proper divisors (2252850717408).

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

1200121010112 is a wasteful number, since it uses less digits than its factorization.

1200121010112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9937478 (or 9937468 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1200121010112 its reverse (2110101210021), we get a palindrome (3310222220133).

The spelling of 1200121010112 in words is "one trillion, two hundred billion, one hundred twenty-one million, ten thousand, one hundred twelve".