21213310331230 has 16 divisors (see below), whose sum is σ = 40430073808080. Its totient is φ = 7986187418752.

The previous prime is 21213310331219. The next prime is 21213310331261. The reversal of 21213310331230 is 3213301331212.

It is a junction number, because it is equal to n+sod(n) for n = 21213310331195 and 21213310331204.

It is a congruent number.

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, 62392089040 + ... + 62392089379.

It is an arithmetic number, because the mean of its divisors is an integer number (2526879613005).

Almost surely, 2^{21213310331230} is an apocalyptic number.

21213310331230 is a deficient number, since it is larger than the sum of its proper divisors (19216763476850).

21213310331230 is a wasteful number, since it uses less digits than its factorization.

21213310331230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124784178443.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 21213310331230 its reverse (3213301331212), we get a palindrome (24426611662442).

The spelling of 21213310331230 in words is "twenty-one trillion, two hundred thirteen billion, three hundred ten million, three hundred thirty-one thousand, two hundred thirty".