21030012321130 has 128 divisors (see below), whose sum is σ = 39733600757760. Its totient is φ = 8004963041280.

The previous prime is 21030012321121. The next prime is 21030012321137. The reversal of 21030012321130 is 3112321003012.

It is a super-2 number, since 2×21030012321130² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21030012321098 and 21030012321107.

It is not an unprimeable number, because it can be changed into a prime (21030012321137) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1937708784 + ... + 1937719636.

It is an arithmetic number, because the mean of its divisors is an integer number (310418755920).

Almost surely, 2^{21030012321130} is an apocalyptic number.

21030012321130 is a deficient number, since it is larger than the sum of its proper divisors (18703588436630).

21030012321130 is a wasteful number, since it uses less digits than its factorization.

21030012321130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11456.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21030012321130 its reverse (3112321003012), we get a palindrome (24142333324142).

The spelling of 21030012321130 in words is "twenty-one trillion, thirty billion, twelve million, three hundred twenty-one thousand, one hundred thirty".