42021313212 has 48 divisors (see below), whose sum is σ = 98309326752. Its totient is φ = 13970073600.

The previous prime is 42021313199. The next prime is 42021313247. The reversal of 42021313212 is 21231312024.

42021313212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×42021313212² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8215968 + ... + 8221080.

It is an arithmetic number, because the mean of its divisors is an integer number (2048110974).

Almost surely, 2^42021313212 is an apocalyptic number.

It is an amenable number.

42021313212 is an abundant number, since it is smaller than the sum of its proper divisors (56288013540).

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

42021313212 is a wasteful number, since it uses less digits than its factorization.

42021313212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6798 (or 6796 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 42021313212 its reverse (21231312024), we get a palindrome (63252625236).

The spelling of 42021313212 in words is "forty-two billion, twenty-one million, three hundred thirteen thousand, two hundred twelve".