22400040212 has 24 divisors (see below), whose sum is σ = 42768637632. Its totient is φ = 10180664000.

The previous prime is 22400040209. The next prime is 22400040217. The reversal of 22400040212 is 21204000422.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22400040217) 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, 442433 + ... + 490455.

It is an arithmetic number, because the mean of its divisors is an integer number (1782026568).

Almost surely, 2^22400040212 is an apocalyptic number.

22400040212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22400040212 is a deficient number, since it is larger than the sum of its proper divisors (20368597420).

22400040212 is a wasteful number, since it uses less digits than its factorization.

22400040212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58639 (or 58637 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 22400040212 its reverse (21204000422), we get a palindrome (43604040634).

The spelling of 22400040212 in words is "twenty-two billion, four hundred million, forty thousand, two hundred twelve".