400120022 has 8 divisors (see below), whose sum is σ = 600521256. Its totient is φ = 199946272.

The previous prime is 400120013. The next prime is 400120051. The reversal of 400120022 is 220021004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 400119985 and 400120012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52403 + ... + 59550.

It is an arithmetic number, because the mean of its divisors is an integer number (75065157).

Almost surely, 2^400120022 is an apocalyptic number.

400120022 is a deficient number, since it is larger than the sum of its proper divisors (200401234).

400120022 is a wasteful number, since it uses less digits than its factorization.

400120022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113742.

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 400120022 is about 20003.0003249513. Note that the first 3 decimals coincide. The cubic root of 400120022 is about 736.8799864966.

Adding to 400120022 its reverse (220021004), we get a palindrome (620141026).

The spelling of 400120022 in words is "four hundred million, one hundred twenty thousand, twenty-two".