2051133111 has 12 divisors (see below), whose sum is σ = 3072479592. Its totient is φ = 1367421912.

The previous prime is 2051133089. The next prime is 2051133121. The reversal of 2051133111 is 1113311502.

It is not a de Polignac number, because 2051133111 - 2¹⁰ = 2051132087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051133121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4220196 + ... + 4220681.

It is an arithmetic number, because the mean of its divisors is an integer number (256039966).

Almost surely, 2^2051133111 is an apocalyptic number.

2051133111 is a deficient number, since it is larger than the sum of its proper divisors (1021346481).

2051133111 is an frugal number, since it uses more digits than its factorization.

2051133111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8440892 (or 8440880 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 2051133111 is about 45289.4370797430. The cubic root of 2051133111 is about 1270.5681032452.

Adding to 2051133111 its reverse (1113311502), we get a palindrome (3164444613).

The spelling of 2051133111 in words is "two billion, fifty-one million, one hundred thirty-three thousand, one hundred eleven".