1111212001012 has 12 divisors (see below), whose sum is σ = 1992050782596. Its totient is φ = 542054634560.

The previous prime is 1111212001001. The next prime is 1111212001013. The reversal of 1111212001012 is 2101002121111.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 382759992976 + 728452008036 = 618676^2 + 853494^2 .

It is a super-2 number, since 2×1111212001012² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1111212000983 and 1111212001001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111212001013) 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 3 ways as a sum of consecutive naturals, for example, 3387841303 + ... + 3387841630.

It is an arithmetic number, because the mean of its divisors is an integer number (166004231883).

Almost surely, 2^{1111212001012} is an apocalyptic number.

It is an amenable number.

1111212001012 is a deficient number, since it is larger than the sum of its proper divisors (880838781584).

1111212001012 is a wasteful number, since it uses less digits than its factorization.

1111212001012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6775682978 (or 6775682976 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1111212001012 its reverse (2101002121111), we get a palindrome (3212214122123).

The spelling of 1111212001012 in words is "one trillion, one hundred eleven billion, two hundred twelve million, one thousand, twelve".