501011212 has 24 divisors (see below), whose sum is σ = 974675072. Its totient is φ = 223776000.

The previous prime is 501011177. The next prime is 501011213. The reversal of 501011212 is 212110105.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 501011192 and 501011201.

It is not an unprimeable number, because it can be changed into a prime (501011213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153789 + ... + 157012.

Almost surely, 2^501011212 is an apocalyptic number.

501011212 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

501011212 is a deficient number, since it is larger than the sum of its proper divisors (473663860).

501011212 is a wasteful number, since it uses less digits than its factorization.

501011212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310849 (or 310847 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 13.

The square root of 501011212 is about 22383.2797418073. The cubic root of 501011212 is about 794.2352320094.

Adding to 501011212 its reverse (212110105), we get a palindrome (713121317).

The spelling of 501011212 in words is "five hundred one million, eleven thousand, two hundred twelve".