20002221132 has 24 divisors (see below), whose sum is σ = 47810188272. Its totient is φ = 6504787200.

The previous prime is 20002221121. The next prime is 20002221133. The reversal of 20002221132 is 23112220002.

It is a happy number.

It is a super-2 number, since 2×20002221132² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20002221133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20326969 + ... + 20327952.

It is an arithmetic number, because the mean of its divisors is an integer number (1992091178).

Almost surely, 2^20002221132 is an apocalyptic number.

It is an amenable number.

20002221132 is an abundant number, since it is smaller than the sum of its proper divisors (27807967140).

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

20002221132 is a wasteful number, since it uses less digits than its factorization.

20002221132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40654969 (or 40654967 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 20002221132 its reverse (23112220002), we get a palindrome (43114441134).

The spelling of 20002221132 in words is "twenty billion, two million, two hundred twenty-one thousand, one hundred thirty-two".