221120011012 has 12 divisors (see below), whose sum is σ = 386970909696. Its totient is φ = 110556893960.

The previous prime is 221120011009. The next prime is 221120011019. The reversal of 221120011012 is 210110021122.

It is a junction number, because it is equal to n+sod(n) for n = 221120010983 and 221120011001.

It is not an unprimeable number, because it can be changed into a prime (221120011019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 614164 + ... + 905227.

It is an arithmetic number, because the mean of its divisors is an integer number (32247575808).

Almost surely, 2^221120011012 is an apocalyptic number.

It is an amenable number.

221120011012 is a deficient number, since it is larger than the sum of its proper divisors (165850898684).

221120011012 is a wasteful number, since it uses less digits than its factorization.

221120011012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1555778 (or 1555776 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 221120011012 its reverse (210110021122), we get a palindrome (431230032134).

The spelling of 221120011012 in words is "two hundred twenty-one billion, one hundred twenty million, eleven thousand, twelve".