40220213212 has 24 divisors (see below), whose sum is σ = 71489915280. Its totient is φ = 19796515200.

The previous prime is 40220213203. The next prime is 40220213219. The reversal of 40220213212 is 21231202204.

It is a self number, because there is not a number n which added to its sum of digits gives 40220213212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40220213219) 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, 168039 + ... + 329662.

It is an arithmetic number, because the mean of its divisors is an integer number (2978746470).

Almost surely, 2^40220213212 is an apocalyptic number.

It is an amenable number.

40220213212 is a deficient number, since it is larger than the sum of its proper divisors (31269702068).

40220213212 is a wasteful number, since it uses less digits than its factorization.

40220213212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498021 (or 498019 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 40220213212 its reverse (21231202204), we get a palindrome (61451415416).

The spelling of 40220213212 in words is "forty billion, two hundred twenty million, two hundred thirteen thousand, two hundred twelve".