20013212132 has 6 divisors (see below), whose sum is σ = 35023121238. Its totient is φ = 10006606064.

The previous prime is 20013212119. The next prime is 20013212137. The reversal of 20013212132 is 23121231002.

It can be written as a sum of positive squares in only one way, i.e., 18404720896 + 1608491236 = 135664^2 + 40106^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20013212132.

It is not an unprimeable number, because it can be changed into a prime (20013212137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2501651513 + ... + 2501651520.

It is an arithmetic number, because the mean of its divisors is an integer number (5837186873).

Almost surely, 2^20013212132 is an apocalyptic number.

It is an amenable number.

20013212132 is a deficient number, since it is larger than the sum of its proper divisors (15009909106).

20013212132 is a wasteful number, since it uses less digits than its factorization.

20013212132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5003303037 (or 5003303035 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20013212132 its reverse (23121231002), we get a palindrome (43134443134).

The spelling of 20013212132 in words is "twenty billion, thirteen million, two hundred twelve thousand, one hundred thirty-two".