221012000020012 has 24 divisors (see below), whose sum is σ = 391770971246592. Its totient is φ = 109079750274000.

The previous prime is 221012000019781. The next prime is 221012000020033. The reversal of 221012000020012 is 210020000210122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 221012000019974 and 221012000020001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 288800664 + ... + 289564927.

It is an arithmetic number, because the mean of its divisors is an integer number (16323790468608).

Almost surely, 2^{221012000020012} is an apocalyptic number.

It is an amenable number.

221012000020012 is a deficient number, since it is larger than the sum of its proper divisors (170758971226580).

221012000020012 is a wasteful number, since it uses less digits than its factorization.

221012000020012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578366829 (or 578366827 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 221012000020012 its reverse (210020000210122), we get a palindrome (431032000230134).

The spelling of 221012000020012 in words is "two hundred twenty-one trillion, twelve billion, twenty thousand, twelve".