1211034011 has 16 divisors (see below), whose sum is σ = 1341409248. Its totient is φ = 1084089600.

The previous prime is 1211034001. The next prime is 1211034029. The reversal of 1211034011 is 1104301121.

It is a de Polignac number, because none of the positive numbers 2^k-1211034011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1211034001) 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, 947705 + ... + 948981.

It is an arithmetic number, because the mean of its divisors is an integer number (83838078).

Almost surely, 2^1211034011 is an apocalyptic number.

1211034011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1211034011 is a deficient number, since it is larger than the sum of its proper divisors (130375237).

1211034011 is a wasteful number, since it uses less digits than its factorization.

1211034011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2542.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 1211034011 is about 34799.9139510430. The cubic root of 1211034011 is about 1065.9056887560.

Adding to 1211034011 its reverse (1104301121), we get a palindrome (2315335132).

The spelling of 1211034011 in words is "one billion, two hundred eleven million, thirty-four thousand, eleven".