511005642021212 has 48 divisors (see below), whose sum is σ = 996306221803200. Its totient is φ = 227704947724800.

The previous prime is 511005642021197. The next prime is 511005642021307. The reversal of 511005642021212 is 212120246500115.

It is a super-2 number, since 2×511005642021212² (a number of 30 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 (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22746464 + ... + 39235352.

It is an arithmetic number, because the mean of its divisors is an integer number (20756379620900).

Almost surely, 2^{511005642021212} is an apocalyptic number.

511005642021212 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

511005642021212 is a deficient number, since it is larger than the sum of its proper divisors (485300579781988).

511005642021212 is a wasteful number, since it uses less digits than its factorization.

511005642021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16509486 (or 16509484 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 32.

Adding to 511005642021212 its reverse (212120246500115), we get a palindrome (723125888521327).

The spelling of 511005642021212 in words is "five hundred eleven trillion, five billion, six hundred forty-two million, twenty-one thousand, two hundred twelve".