400214221209 has 12 divisors (see below), whose sum is σ = 630640591152. Its totient is φ = 242554073400.

The previous prime is 400214221129. The next prime is 400214221241. The reversal of 400214221209 is 902122412004.

400214221209 is a `hidden beast` number, since 400 + 2 + 1 + 42 + 212 + 0 + 9 = 666.

It is not a de Polignac number, because 400214221209 - 2⁸ = 400214220953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400214221109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2021283847 + ... + 2021284044.

It is an arithmetic number, because the mean of its divisors is an integer number (52553382596).

Almost surely, 2^400214221209 is an apocalyptic number.

It is an amenable number.

400214221209 is a deficient number, since it is larger than the sum of its proper divisors (230426369943).

400214221209 is a wasteful number, since it uses less digits than its factorization.

400214221209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4042567908 (or 4042567905 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The spelling of 400214221209 in words is "four hundred billion, two hundred fourteen million, two hundred twenty-one thousand, two hundred nine".