402221122182 has 96 divisors (see below), whose sum is σ = 960234912000. Its totient is φ = 120668281920.

The previous prime is 402221122129. The next prime is 402221122183. The reversal of 402221122182 is 281221122204.

402221122182 is a `hidden beast` number, since 402 + 22 + 11 + 221 + 8 + 2 = 666.

It is a super-2 number, since 2×402221122182² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402221122183) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9860044 + ... + 9900752.

It is an arithmetic number, because the mean of its divisors is an integer number (10002447000).

Almost surely, 2^402221122182 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402221122182, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (480117456000).

402221122182 is an abundant number, since it is smaller than the sum of its proper divisors (558013789818).

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

402221122182 is a wasteful number, since it uses less digits than its factorization.

402221122182 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41226 (or 41223 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

Adding to 402221122182 its reverse (281221122204), we get a palindrome (683442244386).

The spelling of 402221122182 in words is "four hundred two billion, two hundred twenty-one million, one hundred twenty-two thousand, one hundred eighty-two".