21320012232130 has 8 divisors (see below), whose sum is σ = 38376022017852. Its totient is φ = 8528004892848.

The previous prime is 21320012232119. The next prime is 21320012232137. The reversal of 21320012232130 is 3123221002312.

It can be written as a sum of positive squares in 2 ways, for example, as 21289466630601 + 30545601529 = 4614051^2 + 174773^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (21320012232137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1066000611597 + ... + 1066000611616.

Almost surely, 2^{21320012232130} is an apocalyptic number.

21320012232130 is a deficient number, since it is larger than the sum of its proper divisors (17056009785722).

21320012232130 is a wasteful number, since it uses less digits than its factorization.

21320012232130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2132001223220.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21320012232130 its reverse (3123221002312), we get a palindrome (24443233234442).

The spelling of 21320012232130 in words is "twenty-one trillion, three hundred twenty billion, twelve million, two hundred thirty-two thousand, one hundred thirty".