21212233201330 has 32 divisors (see below), whose sum is σ = 38268733067136. Its totient is φ = 8465645503104.

The previous prime is 21212233201301. The next prime is 21212233201339. The reversal of 21212233201330 is 3310233221212.

It is a junction number, because it is equal to n+sod(n) for n = 21212233201295 and 21212233201304.

It is not an unprimeable number, because it can be changed into a prime (21212233201339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6408507 + ... + 9137473.

It is an arithmetic number, because the mean of its divisors is an integer number (1195897908348).

Almost surely, 2^{21212233201330} is an apocalyptic number.

21212233201330 is a deficient number, since it is larger than the sum of its proper divisors (17056499865806).

21212233201330 is a wasteful number, since it uses less digits than its factorization.

21212233201330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2730738.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 21212233201330 its reverse (3310233221212), we get a palindrome (24522466422542).

The spelling of 21212233201330 in words is "twenty-one trillion, two hundred twelve billion, two hundred thirty-three million, two hundred one thousand, three hundred thirty".