221212002001012 has 24 divisors (see below), whose sum is σ = 422321663554560. Its totient is φ = 100549042964160.

The previous prime is 221212002000989. The next prime is 221212002001027. The reversal of 221212002001012 is 210100200212122.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44277937 + ... + 49019992.

It is an arithmetic number, because the mean of its divisors is an integer number (17596735981440).

Almost surely, 2^{221212002001012} is an apocalyptic number.

221212002001012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

221212002001012 is a deficient number, since it is larger than the sum of its proper divisors (201109661553548).

221212002001012 is a wasteful number, since it uses less digits than its factorization.

221212002001012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93351831 (or 93351829 counting only the distinct ones).

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

Adding to 221212002001012 its reverse (210100200212122), we get a palindrome (431312202213134).

The spelling of 221212002001012 in words is "two hundred twenty-one trillion, two hundred twelve billion, two million, one thousand, twelve".