40402212112 has 20 divisors (see below), whose sum is σ = 80978572620. Its totient is φ = 19504515968.

The previous prime is 40402212101. The next prime is 40402212113. The reversal of 40402212112 is 21121220404.

It can be written as a sum of positive squares in 2 ways, for example, as 11697720336 + 28704491776 = 108156^2 + 169424^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40402212112.

It is not an unprimeable number, because it can be changed into a prime (40402212113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43536403 + ... + 43537330.

It is an arithmetic number, because the mean of its divisors is an integer number (4048928631).

Almost surely, 2^40402212112 is an apocalyptic number.

It is an amenable number.

40402212112 is an abundant number, since it is smaller than the sum of its proper divisors (40576360508).

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

40402212112 is a wasteful number, since it uses less digits than its factorization.

40402212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87073770 (or 87073764 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 40402212112 its reverse (21121220404), we get a palindrome (61523432516).

The spelling of 40402212112 in words is "forty billion, four hundred two million, two hundred twelve thousand, one hundred twelve".