120121221012 has 24 divisors (see below), whose sum is σ = 301843068576. Its totient is φ = 36960375648.

The previous prime is 120121220971. The next prime is 120121221037. The reversal of 120121221012 is 210122121021.

It is a junction number, because it is equal to n+sod(n) for n = 120121220982 and 120121221000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 385003758 + ... + 385004069.

It is an arithmetic number, because the mean of its divisors is an integer number (12576794524).

Almost surely, 2^120121221012 is an apocalyptic number.

120121221012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

120121221012 is an abundant number, since it is smaller than the sum of its proper divisors (181721847564).

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

120121221012 is a wasteful number, since it uses less digits than its factorization.

120121221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770007847 (or 770007845 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 120121221012 its reverse (210122121021), we get a palindrome (330243342033).

Subtracting 120121221012 from its reverse (210122121021), we obtain a palindrome (90000900009).

The spelling of 120121221012 in words is "one hundred twenty billion, one hundred twenty-one million, two hundred twenty-one thousand, twelve".