1111221001012 has 24 divisors (see below), whose sum is σ = 2059115756040. Its totient is φ = 522905026560.

The previous prime is 1111221001003. The next prime is 1111221001061. The reversal of 1111221001012 is 2101001221111.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 526736286756 + 584484714256 = 725766^2 + 764516^2 .

It is a super-2 number, since 2×1111221001012² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1111221000983 and 1111221001001.

It is a congruent number.

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, 1296564 + ... + 1975732.

It is an arithmetic number, because the mean of its divisors is an integer number (85796489835).

Almost surely, 2^{1111221001012} is an apocalyptic number.

It is an amenable number.

1111221001012 is a deficient number, since it is larger than the sum of its proper divisors (947894755028).

1111221001012 is a wasteful number, since it uses less digits than its factorization.

1111221001012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703251 (or 703249 counting only the distinct ones).

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

Adding to 1111221001012 its reverse (2101001221111), we get a palindrome (3212222222123).

The spelling of 1111221001012 in words is "one trillion, one hundred eleven billion, two hundred twenty-one million, one thousand, twelve".