400112210221 has 16 divisors (see below), whose sum is σ = 420518545408. Its totient is φ = 380196633600.

The previous prime is 400112210209. The next prime is 400112210263. The reversal of 400112210221 is 122012211004.

It is a cyclic number.

It is not a de Polignac number, because 400112210221 - 2¹³ = 400112202029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400112210195 and 400112210204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400112210321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 907756 + ... + 1274458.

It is an arithmetic number, because the mean of its divisors is an integer number (26282409088).

Almost surely, 2^400112210221 is an apocalyptic number.

It is an amenable number.

400112210221 is a deficient number, since it is larger than the sum of its proper divisors (20406335187).

400112210221 is a wasteful number, since it uses less digits than its factorization.

400112210221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367372.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 400112210221 its reverse (122012211004), we get a palindrome (522124421225).

The spelling of 400112210221 in words is "four hundred billion, one hundred twelve million, two hundred ten thousand, two hundred twenty-one".