511231140212 has 48 divisors (see below), whose sum is σ = 989519553792. Its totient is φ = 229614860160.

The previous prime is 511231140149. The next prime is 511231140239. The reversal of 511231140212 is 212041132115.

It is a super-2 number, since 2×511231140212² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184118 + ... + 1027794.

It is an arithmetic number, because the mean of its divisors is an integer number (20614990704).

Almost surely, 2^511231140212 is an apocalyptic number.

511231140212 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

511231140212 is a deficient number, since it is larger than the sum of its proper divisors (478288413580).

511231140212 is a wasteful number, since it uses less digits than its factorization.

511231140212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844008 (or 844006 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

Adding to 511231140212 its reverse (212041132115), we get a palindrome (723272272327).

The spelling of 511231140212 in words is "five hundred eleven billion, two hundred thirty-one million, one hundred forty thousand, two hundred twelve".