221012000012 has 24 divisors (see below), whose sum is σ = 393526879200. Its totient is φ = 108587005056.

The previous prime is 221011999997. The next prime is 221012000017. The reversal of 221012000012 is 210000210122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 221011999957 and 221012000002.

It is not an unprimeable number, because it can be changed into a prime (221012000017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1328312 + ... + 1485407.

It is an arithmetic number, because the mean of its divisors is an integer number (16396953300).

Almost surely, 2^221012000012 is an apocalyptic number.

It is an amenable number.

221012000012 is a deficient number, since it is larger than the sum of its proper divisors (172514879188).

221012000012 is a wasteful number, since it uses less digits than its factorization.

221012000012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2814065 (or 2814063 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 221012000012 its reverse (210000210122), we get a palindrome (431012210134).

The spelling of 221012000012 in words is "two hundred twenty-one billion, twelve million, twelve", and thus it is an aban number.