12210312211536 has 80 divisors (see below), whose sum is σ = 32919023154816. Its totient is φ = 3892638148608.

The previous prime is 12210312211519. The next prime is 12210312211577. The reversal of 12210312211536 is 63511221301221.

It is a happy number.

12210312211536 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12210312211536² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7846036 + ... + 9272588.

Almost surely, 2^{12210312211536} is an apocalyptic number.

12210312211536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12210312211536 is an abundant number, since it is smaller than the sum of its proper divisors (20708710943280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12210312211536 is a wasteful number, since it uses less digits than its factorization.

12210312211536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1434340 (or 1434334 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

Adding to 12210312211536 its reverse (63511221301221), we get a palindrome (75721533512757).

The spelling of 12210312211536 in words is "twelve trillion, two hundred ten billion, three hundred twelve million, two hundred eleven thousand, five hundred thirty-six".