12101011212 has 12 divisors (see below), whose sum is σ = 28235692856. Its totient is φ = 4033670400.

The previous prime is 12101011207. The next prime is 12101011243. The reversal of 12101011212 is 21211010121.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 1008417601 = 12101011212 / (1 + 2 + 1 + 0 + 1 + 0 + 1 + 1 + 2 + 1 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 504208789 + ... + 504208812.

Almost surely, 2^12101011212 is an apocalyptic number.

12101011212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12101011212 is an abundant number, since it is smaller than the sum of its proper divisors (16134681644).

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

12101011212 is a wasteful number, since it uses less digits than its factorization.

12101011212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008417608 (or 1008417606 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12101011212 its reverse (21211010121), we get a palindrome (33312021333).

The spelling of 12101011212 in words is "twelve billion, one hundred one million, eleven thousand, two hundred twelve".