12121011202212 has 36 divisors (see below), whose sum is σ = 33424606649616. Its totient is φ = 3673033697520.

The previous prime is 12121011202211. The next prime is 12121011202217. The reversal of 12121011202212 is 21220211012121.

12121011202212 is a `hidden beast` number, since 121 + 210 + 1 + 120 + 2 + 212 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is not an unprimeable number, because it can be changed into a prime (12121011202211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15304306678 + ... + 15304307469.

Almost surely, 2^{12121011202212} is an apocalyptic number.

12121011202212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12121011202212 is an abundant number, since it is smaller than the sum of its proper divisors (21303595447404).

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

12121011202212 is a wasteful number, since it uses less digits than its factorization.

12121011202212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30608614168 (or 30608614163 counting only the distinct ones).

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

Adding to 12121011202212 its reverse (21220211012121), we get a palindrome (33341222214333).

The spelling of 12121011202212 in words is "twelve trillion, one hundred twenty-one billion, eleven million, two hundred two thousand, two hundred twelve".