405015312212 has 12 divisors (see below), whose sum is σ = 810030624480. Its totient is φ = 173577990936.

The previous prime is 405015312203. The next prime is 405015312217. The reversal of 405015312212 is 212213510504.

405015312212 is an admirable number.

It is a super-3 number, since 3×405015312212³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405015312217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7232416262 + ... + 7232416317.

It is an arithmetic number, because the mean of its divisors is an integer number (67502552040).

Almost surely, 2^405015312212 is an apocalyptic number.

It is an amenable number.

405015312212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

405015312212 is a wasteful number, since it uses less digits than its factorization.

405015312212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14464832590 (or 14464832588 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 405015312212 its reverse (212213510504), we get a palindrome (617228822716).

The spelling of 405015312212 in words is "four hundred five billion, fifteen million, three hundred twelve thousand, two hundred twelve".