400222400212225 has 24 divisors (see below), whose sum is σ = 522817863179840. Its totient is φ = 303081238883520.

The previous prime is 400222400212213. The next prime is 400222400212253. The reversal of 400222400212225 is 522212004222004.

It is a happy number.

It is not a de Polignac number, because 400222400212225 - 2¹¹ = 400222400210177 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400222400212193 and 400222400212202.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 339983757 + ... + 341158906.

Almost surely, 2^{400222400212225} is an apocalyptic number.

It is an amenable number.

400222400212225 is a deficient number, since it is larger than the sum of its proper divisors (122595462967615).

400222400212225 is a wasteful number, since it uses less digits than its factorization.

400222400212225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681143929 (or 681143924 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 28.

Adding to 400222400212225 its reverse (522212004222004), we get a palindrome (922434404434229).

The spelling of 400222400212225 in words is "four hundred trillion, two hundred twenty-two billion, four hundred million, two hundred twelve thousand, two hundred twenty-five".