20130212132 has 12 divisors (see below), whose sum is σ = 35288928780. Its totient is φ = 10047661056.

The previous prime is 20130212129. The next prime is 20130212161. The reversal of 20130212132 is 23121203102.

It can be written as a sum of positive squares in 2 ways, for example, as 10060892416 + 10069319716 = 100304^2 + 100346^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20130212132.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4358657 + ... + 4363272.

It is an arithmetic number, because the mean of its divisors is an integer number (2940744065).

Almost surely, 2^20130212132 is an apocalyptic number.

It is an amenable number.

20130212132 is a deficient number, since it is larger than the sum of its proper divisors (15158716648).

20130212132 is a wasteful number, since it uses less digits than its factorization.

20130212132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8722510 (or 8722508 counting only the distinct ones).

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

Adding to 20130212132 its reverse (23121203102), we get a palindrome (43251415234).

The spelling of 20130212132 in words is "twenty billion, one hundred thirty million, two hundred twelve thousand, one hundred thirty-two".