221200120120012 has 48 divisors (see below), whose sum is σ = 422939378534400. Its totient is φ = 100391229005760.

The previous prime is 221200120120003. The next prime is 221200120120027. The reversal of 221200120120012 is 210021021002122.

It is a happy number.

It is a super-2 number, since 2×221200120120012² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140674039 + ... + 142237777.

It is an arithmetic number, because the mean of its divisors is an integer number (8811237052800).

Almost surely, 2^{221200120120012} is an apocalyptic number.

221200120120012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

221200120120012 is a deficient number, since it is larger than the sum of its proper divisors (201739258414388).

221200120120012 is a wasteful number, since it uses less digits than its factorization.

221200120120012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1568686 (or 1568684 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221200120120012 its reverse (210021021002122), we get a palindrome (431221141122134).

The spelling of 221200120120012 in words is "two hundred twenty-one trillion, two hundred billion, one hundred twenty million, one hundred twenty thousand, twelve".