22022022402 has 24 divisors (see below), whose sum is σ = 48136637484. Its totient is φ = 7275711744.

The previous prime is 22022022401. The next prime is 22022022431. The reversal of 22022022402 is 20422022022.

It is a happy number.

22022022402 is a `hidden beast` number, since 2 + 20 + 220 + 22 + 402 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 21960572481 + 61449921 = 148191^2 + 7839^2 .

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 (22022022401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5411443 + ... + 5415510.

Almost surely, 2^22022022402 is an apocalyptic number.

22022022402 is an abundant number, since it is smaller than the sum of its proper divisors (26114615082).

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

22022022402 is a wasteful number, since it uses less digits than its factorization.

22022022402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10827074 (or 10827071 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

Adding to 22022022402 its reverse (20422022022), we get a palindrome (42444044424).

The spelling of 22022022402 in words is "twenty-two billion, twenty-two million, twenty-two thousand, four hundred two".