11211131045 has 16 divisors (see below), whose sum is σ = 13503881088. Its totient is φ = 8935270080.

The previous prime is 11211131039. The next prime is 11211131069. The reversal of 11211131045 is 54013111211.

It is not a de Polignac number, because 11211131045 - 2¹⁸ = 11210868901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2786135 + ... + 2790155.

It is an arithmetic number, because the mean of its divisors is an integer number (843992568).

Almost surely, 2^11211131045 is an apocalyptic number.

It is an amenable number.

11211131045 is a deficient number, since it is larger than the sum of its proper divisors (2292750043).

11211131045 is a wasteful number, since it uses less digits than its factorization.

11211131045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5980.

The product of its (nonzero) digits is 120, while the sum is 20.

Adding to 11211131045 its reverse (54013111211), we get a palindrome (65224242256).

The spelling of 11211131045 in words is "eleven billion, two hundred eleven million, one hundred thirty-one thousand, forty-five".