402000223122 has 48 divisors (see below), whose sum is σ = 873863123328. Its totient is φ = 133560201600.

The previous prime is 402000223039. The next prime is 402000223147. The reversal of 402000223122 is 221322000204.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 402000223095 and 402000223104.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 9383683 + ... + 9426425.

It is an arithmetic number, because the mean of its divisors is an integer number (18205481736).

Almost surely, 2^402000223122 is an apocalyptic number.

402000223122 is an abundant number, since it is smaller than the sum of its proper divisors (471862900206).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

402000223122 is a wasteful number, since it uses less digits than its factorization.

402000223122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44455 (or 44452 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 402000223122 its reverse (221322000204), we get a palindrome (623322223326).

The spelling of 402000223122 in words is "four hundred two billion, two hundred twenty-three thousand, one hundred twenty-two".