21210223130030 has 64 divisors (see below), whose sum is σ = 43041162792960. Its totient is φ = 7455592185600.

The previous prime is 21210223129973. The next prime is 21210223130039. The reversal of 21210223130030 is 3003132201212.

It is a super-2 number, since 2×21210223130030² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21210223129984 and 21210223130011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21210223130039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 481535 + ... + 6530874.

It is an arithmetic number, because the mean of its divisors is an integer number (672518168640).

Almost surely, 2^{21210223130030} is an apocalyptic number.

21210223130030 is an abundant number, since it is smaller than the sum of its proper divisors (21830939662930).

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

21210223130030 is a wasteful number, since it uses less digits than its factorization.

21210223130030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7013345.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21210223130030 its reverse (3003132201212), we get a palindrome (24213355331242).

The spelling of 21210223130030 in words is "twenty-one trillion, two hundred ten billion, two hundred twenty-three million, one hundred thirty thousand, thirty".