1211000120112 has 40 divisors (see below), whose sum is σ = 3212968791856. Its totient is φ = 392756795136.

The previous prime is 1211000120089. The next prime is 1211000120123. The reversal of 1211000120112 is 2110210001121.

It is a super-2 number, since 2×1211000120112² (a number of 25 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340932943 + ... + 340936494.

Almost surely, 2^{1211000120112} is an apocalyptic number.

1211000120112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1211000120112 is an abundant number, since it is smaller than the sum of its proper divisors (2001968671744).

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

1211000120112 is a wasteful number, since it uses less digits than its factorization.

1211000120112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681869485 (or 681869479 counting only the distinct ones).

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

Adding to 1211000120112 its reverse (2110210001121), we get a palindrome (3321210121233).

The spelling of 1211000120112 in words is "one trillion, two hundred eleven billion, one hundred twenty thousand, one hundred twelve".