1211231411 has 16 divisors (see below), whose sum is σ = 1351607040. Its totient is φ = 1077874560.

The previous prime is 1211231401. The next prime is 1211231431. The reversal of 1211231411 is 1141321121.

It is a cyclic number.

It is not a de Polignac number, because 1211231411 - 2⁶ = 1211231347 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1211231411.

It is not an unprimeable number, because it can be changed into a prime (1211231401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102821 + ... + 113993.

It is an arithmetic number, because the mean of its divisors is an integer number (84475440).

Almost surely, 2^1211231411 is an apocalyptic number.

1211231411 is a deficient number, since it is larger than the sum of its proper divisors (140375629).

1211231411 is a wasteful number, since it uses less digits than its factorization.

1211231411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11486.

The product of its digits is 48, while the sum is 17.

The square root of 1211231411 is about 34802.7500493855. The cubic root of 1211231411 is about 1065.9636002458.

Adding to 1211231411 its reverse (1141321121), we get a palindrome (2352552532).

The spelling of 1211231411 in words is "one billion, two hundred eleven million, two hundred thirty-one thousand, four hundred eleven".