21103331030212 has 48 divisors (see below), whose sum is σ = 38173194259200. Its totient is φ = 10202154109952.

The previous prime is 21103331030209. The next prime is 21103331030213. The reversal of 21103331030212 is 21203013330112.

It is not an unprimeable number, because it can be changed into a prime (21103331030213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 414994164 + ... + 415045012.

It is an arithmetic number, because the mean of its divisors is an integer number (795274880400).

Almost surely, 2^{21103331030212} is an apocalyptic number.

It is an amenable number.

21103331030212 is a deficient number, since it is larger than the sum of its proper divisors (17069863228988).

21103331030212 is a wasteful number, since it uses less digits than its factorization.

21103331030212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77580 (or 77578 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 21103331030212 its reverse (21203013330112), we get a palindrome (42306344360324).

The spelling of 21103331030212 in words is "twenty-one trillion, one hundred three billion, three hundred thirty-one million, thirty thousand, two hundred twelve".