1321212000212 has 48 divisors (see below), whose sum is σ = 2557814112000. Its totient is φ = 593259728640.

The previous prime is 1321212000209. The next prime is 1321212000217. The reversal of 1321212000212 is 2120002121231.

It is a super-2 number, since 2×1321212000212² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321212000217) 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, 97712 + ... + 1628487.

It is an arithmetic number, because the mean of its divisors is an integer number (53287794000).

Almost surely, 2^{1321212000212} is an apocalyptic number.

It is an amenable number.

1321212000212 is a deficient number, since it is larger than the sum of its proper divisors (1236602111788).

1321212000212 is a wasteful number, since it uses less digits than its factorization.

1321212000212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1726616 (or 1726614 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1321212000212 its reverse (2120002121231), we get a palindrome (3441214121443).

The spelling of 1321212000212 in words is "one trillion, three hundred twenty-one billion, two hundred twelve million, two hundred twelve", and thus it is an aban number.