12101211222012 has 72 divisors (see below), whose sum is σ = 35332948293552. Its totient is φ = 3451325836800.

The previous prime is 12101211222007. The next prime is 12101211222031. The reversal of 12101211222012 is 21022211210121.

12101211222012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 898776039 + ... + 898789502.

It is an arithmetic number, because the mean of its divisors is an integer number (490735392966).

Almost surely, 2^{12101211222012} is an apocalyptic number.

12101211222012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12101211222012 is an abundant number, since it is smaller than the sum of its proper divisors (23231737071540).

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

12101211222012 is a wasteful number, since it uses less digits than its factorization.

12101211222012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1797565579 (or 1797565574 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12101211222012 its reverse (21022211210121), we get a palindrome (33123422432133).

The spelling of 12101211222012 in words is "twelve trillion, one hundred one billion, two hundred eleven million, two hundred twenty-two thousand, twelve".