20132221302 has 80 divisors (see below), whose sum is σ = 45783738000. Its totient is φ = 6611388480.

The previous prime is 20132221297. The next prime is 20132221309. The reversal of 20132221302 is 20312223102.

20132221302 is a `hidden beast` number, since 20 + 1 + 322 + 21 + 302 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20132221309) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3192949 + ... + 3199247.

It is an arithmetic number, because the mean of its divisors is an integer number (572296725).

Almost surely, 2^20132221302 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20132221302, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22891869000).

20132221302 is an abundant number, since it is smaller than the sum of its proper divisors (25651516698).

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

20132221302 is a wasteful number, since it uses less digits than its factorization.

20132221302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6603 (or 6594 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20132221302 its reverse (20312223102), we get a palindrome (40444444404).

The spelling of 20132221302 in words is "twenty billion, one hundred thirty-two million, two hundred twenty-one thousand, three hundred two".