21220011313012 has 12 divisors (see below), whose sum is σ = 37162185147360. Its totient is φ = 10602244128056.

The previous prime is 21220011313003. The next prime is 21220011313021. The reversal of 21220011313012 is 21031311002212.

It is an interprime number because it is at equal distance from previous prime (21220011313003) and next prime (21220011313021).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1940375962 + ... + 1940386897.

It is an arithmetic number, because the mean of its divisors is an integer number (3096848762280).

Almost surely, 2^{21220011313012} is an apocalyptic number.

It is an amenable number.

21220011313012 is a deficient number, since it is larger than the sum of its proper divisors (15942173834348).

21220011313012 is a wasteful number, since it uses less digits than its factorization.

21220011313012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3880764230 (or 3880764228 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 21220011313012 its reverse (21031311002212), we get a palindrome (42251322315224).

The spelling of 21220011313012 in words is "twenty-one trillion, two hundred twenty billion, eleven million, three hundred thirteen thousand, twelve".