1211212244043 has 6 divisors (see below), whose sum is σ = 1749528796964. Its totient is φ = 807474829356.

The previous prime is 1211212243991. The next prime is 1211212244063. The reversal of 1211212244043 is 3404422121121.

1211212244043 is a `hidden beast` number, since 1 + 2 + 1 + 1 + 212 + 2 + 440 + 4 + 3 = 666.

It is not a de Polignac number, because 1211212244043 - 2¹⁰ = 1211212243019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1211212243998 and 1211212244016.

It is not an unprimeable number, because it can be changed into a prime (1211212244063) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67289569105 + ... + 67289569122.

Almost surely, 2^{1211212244043} is an apocalyptic number.

1211212244043 is a deficient number, since it is larger than the sum of its proper divisors (538316552921).

1211212244043 is a wasteful number, since it uses less digits than its factorization.

1211212244043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134579138233 (or 134579138230 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 1211212244043 its reverse (3404422121121), we get a palindrome (4615634365164).

The spelling of 1211212244043 in words is "one trillion, two hundred eleven billion, two hundred twelve million, two hundred forty-four thousand, forty-three".