21121112310330 has 16 divisors (see below), whose sum is σ = 50690669544864. Its totient is φ = 5632296616080.

The previous prime is 21121112310317. The next prime is 21121112310343. The reversal of 21121112310330 is 3301321112112.

It is an interprime number because it is at equal distance from previous prime (21121112310317) and next prime (21121112310343).

It is a super-2 number, since 2×21121112310330² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21121112310297 and 21121112310306.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 352018538476 + ... + 352018538535.

It is an arithmetic number, because the mean of its divisors is an integer number (3168166846554).

Almost surely, 2^{21121112310330} is an apocalyptic number.

21121112310330 is an abundant number, since it is smaller than the sum of its proper divisors (29569557234534).

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

21121112310330 is a wasteful number, since it uses less digits than its factorization.

21121112310330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704037077021.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 21121112310330 its reverse (3301321112112), we get a palindrome (24422433422442).

The spelling of 21121112310330 in words is "twenty-one trillion, one hundred twenty-one billion, one hundred twelve million, three hundred ten thousand, three hundred thirty".