21212214002 has 64 divisors (see below), whose sum is σ = 38954926080. Its totient is φ = 8467265664.

The previous prime is 21212213927. The next prime is 21212214007. The reversal of 21212214002 is 20041221212.

It is not an unprimeable number, because it can be changed into a prime (21212214007) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1851263 + ... + 1862685.

It is an arithmetic number, because the mean of its divisors is an integer number (608670720).

Almost surely, 2^21212214002 is an apocalyptic number.

21212214002 is a deficient number, since it is larger than the sum of its proper divisors (17742712078).

21212214002 is a wasteful number, since it uses less digits than its factorization.

21212214002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11607.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 21212214002 its reverse (20041221212), we get a palindrome (41253435214).

The spelling of 21212214002 in words is "twenty-one billion, two hundred twelve million, two hundred fourteen thousand, two".