3311212520021 has 32 divisors (see below), whose sum is σ = 3988550400000. Its totient is φ = 2685339034560.

The previous prime is 3311212520017. The next prime is 3311212520053. The reversal of 3311212520021 is 1200252121133.

It is not a de Polignac number, because 3311212520021 - 2² = 3311212520017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3311212520321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 662372480 + ... + 662377478.

It is an arithmetic number, because the mean of its divisors is an integer number (124642200000).

Almost surely, 2^{3311212520021} is an apocalyptic number.

It is an amenable number.

3311212520021 is a deficient number, since it is larger than the sum of its proper divisors (677337879979).

3311212520021 is a wasteful number, since it uses less digits than its factorization.

3311212520021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10449.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 3311212520021 its reverse (1200252121133), we get a palindrome (4511464641154).

The spelling of 3311212520021 in words is "three trillion, three hundred eleven billion, two hundred twelve million, five hundred twenty thousand, twenty-one".