402221311002 has 48 divisors (see below), whose sum is σ = 996026209152. Its totient is φ = 114914648160.

The previous prime is 402221310979. The next prime is 402221311003. The reversal of 402221311002 is 200113122204.

It is a happy number.

402221311002 is a `hidden beast` number, since 402 + 221 + 31 + 10 + 0 + 2 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (402221311003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2900427 + ... + 3035937.

It is an arithmetic number, because the mean of its divisors is an integer number (20750546024).

Almost surely, 2^402221311002 is an apocalyptic number.

402221311002 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

402221311002 is an abundant number, since it is smaller than the sum of its proper divisors (593804898150).

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

402221311002 is a wasteful number, since it uses less digits than its factorization.

402221311002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159083 (or 159080 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 402221311002 its reverse (200113122204), we get a palindrome (602334433206).

The spelling of 402221311002 in words is "four hundred two billion, two hundred twenty-one million, three hundred eleven thousand, two".