121011223321212 has 96 divisors (see below), whose sum is σ = 348861184519680. Its totient is φ = 31869649532160.

The previous prime is 121011223321207. The next prime is 121011223321223. The reversal of 121011223321212 is 212123322110121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1024556739 + ... + 1024674842.

It is an arithmetic number, because the mean of its divisors is an integer number (3633970672080).

Almost surely, 2^{121011223321212} is an apocalyptic number.

121011223321212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121011223321212 is an abundant number, since it is smaller than the sum of its proper divisors (227849961198468).

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

121011223321212 is a wasteful number, since it uses less digits than its factorization.

121011223321212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2049231651 (or 2049231649 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 121011223321212 its reverse (212123322110121), we get a palindrome (333134545431333).

The spelling of 121011223321212 in words is "one hundred twenty-one trillion, eleven billion, two hundred twenty-three million, three hundred twenty-one thousand, two hundred twelve".