221121000021002 has 32 divisors (see below), whose sum is σ = 338223525868800. Its totient is φ = 108390177280000.

The previous prime is 221121000021001. The next prime is 221121000021011. The reversal of 221121000021002 is 200120000121122.

It is not an unprimeable number, because it can be changed into a prime (221121000021001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202402127 + ... + 203491677.

It is an arithmetic number, because the mean of its divisors is an integer number (10569485183400).

Almost surely, 2^{221121000021002} is an apocalyptic number.

221121000021002 is a deficient number, since it is larger than the sum of its proper divisors (117102525847798).

221121000021002 is a wasteful number, since it uses less digits than its factorization.

221121000021002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1094302.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 221121000021002 its reverse (200120000121122), we get a palindrome (421241000142124).

The spelling of 221121000021002 in words is "two hundred twenty-one trillion, one hundred twenty-one billion, twenty-one thousand, two".