1121211110012 has 36 divisors (see below), whose sum is σ = 2325530881800. Its totient is φ = 471452645664.

The previous prime is 1121211110009. The next prime is 1121211110017. The reversal of 1121211110012 is 2100111121211.

It is a super-2 number, since 2×1121211110012² (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 not an unprimeable number, because it can be changed into a prime (1121211110017) by changing a digit.

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, 53956262 + ... + 53977037.

It is an arithmetic number, because the mean of its divisors is an integer number (64598080050).

Almost surely, 2^{1121211110012} is an apocalyptic number.

It is an amenable number.

1121211110012 is an abundant number, since it is smaller than the sum of its proper divisors (1204319771788).

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

1121211110012 is a wasteful number, since it uses less digits than its factorization.

1121211110012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107933370 (or 107933361 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1121211110012 its reverse (2100111121211), we get a palindrome (3221322231223).

The spelling of 1121211110012 in words is "one trillion, one hundred twenty-one billion, two hundred eleven million, one hundred ten thousand, twelve".