120011221212 has 12 divisors (see below), whose sum is σ = 280026182856. Its totient is φ = 40003740400.

The previous prime is 120011221193. The next prime is 120011221223. The reversal of 120011221212 is 212122110021.

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

It is a junction number, because it is equal to n+sod(n) for n = 120011221191 and 120011221200.

It is a congruent number.

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, 5000467539 + ... + 5000467562.

It is an arithmetic number, because the mean of its divisors is an integer number (23335515238).

Almost surely, 2^120011221212 is an apocalyptic number.

120011221212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

120011221212 is an abundant number, since it is smaller than the sum of its proper divisors (160014961644).

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

120011221212 is a wasteful number, since it uses less digits than its factorization.

120011221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10000935108 (or 10000935106 counting only the distinct ones).

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

Adding to 120011221212 its reverse (212122110021), we get a palindrome (332133331233).

The spelling of 120011221212 in words is "one hundred twenty billion, eleven million, two hundred twenty-one thousand, two hundred twelve".