1211107126 has 16 divisors (see below), whose sum is σ = 1872495504. Its totient is φ = 587147904.

The previous prime is 1211107109. The next prime is 1211107141. The reversal of 1211107126 is 6217011121.

It is a junction number, because it is equal to n+sod(n) for n = 1211107097 and 1211107106.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39615 + ... + 63178.

It is an arithmetic number, because the mean of its divisors is an integer number (117030969).

Almost surely, 2^1211107126 is an apocalyptic number.

1211107126 is a deficient number, since it is larger than the sum of its proper divisors (661388378).

1211107126 is a wasteful number, since it uses less digits than its factorization.

1211107126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102975.

The product of its (nonzero) digits is 168, while the sum is 22.

The square root of 1211107126 is about 34800.9644406588. The cubic root of 1211107126 is about 1065.9271393305.

Adding to 1211107126 its reverse (6217011121), we get a palindrome (7428118247).

The spelling of 1211107126 in words is "one billion, two hundred eleven million, one hundred seven thousand, one hundred twenty-six".