221012111000002 has 12 divisors (see below), whose sum is σ = 385643581438950. Its totient is φ = 94719476142816.

The previous prime is 221012110999991. The next prime is 221012111000041. The reversal of 221012111000002 is 200000111210122.

It can be written as a sum of positive squares in only one way, i.e., 220713482632041 + 298628367961 = 14856429^2 + 546469^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1127612811127 + ... + 1127612811322.

Almost surely, 2^{221012111000002} is an apocalyptic number.

221012111000002 is a deficient number, since it is larger than the sum of its proper divisors (164631470438948).

221012111000002 is a wasteful number, since it uses less digits than its factorization.

221012111000002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2255225622465 (or 2255225622458 counting only the distinct ones).

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

Adding to 221012111000002 its reverse (200000111210122), we get a palindrome (421012222210124).

The spelling of 221012111000002 in words is "two hundred twenty-one trillion, twelve billion, one hundred eleven million, two", and thus it is an aban number.