20213012132 has 6 divisors (see below), whose sum is σ = 35372771238. Its totient is φ = 10106506064.

The previous prime is 20213012129. The next prime is 20213012143. The reversal of 20213012132 is 23121031202.

It can be written as a sum of positive squares in only one way, i.e., 19719461476 + 493550656 = 140426^2 + 22216^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20213012132.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2526626513 + ... + 2526626520.

It is an arithmetic number, because the mean of its divisors is an integer number (5895461873).

Almost surely, 2^20213012132 is an apocalyptic number.

It is an amenable number.

20213012132 is a deficient number, since it is larger than the sum of its proper divisors (15159759106).

20213012132 is a wasteful number, since it uses less digits than its factorization.

20213012132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5053253037 (or 5053253035 counting only the distinct ones).

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

Adding to 20213012132 its reverse (23121031202), we get a palindrome (43334043334).

The spelling of 20213012132 in words is "twenty billion, two hundred thirteen million, twelve thousand, one hundred thirty-two".