21212012221202 has 8 divisors (see below), whose sum is σ = 34710565452912. Its totient is φ = 9641823736900.

The previous prime is 21212012221189. The next prime is 21212012221223. The reversal of 21212012221202 is 20212221021212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 482091186824 + ... + 482091186867.

It is an arithmetic number, because the mean of its divisors is an integer number (4338820681614).

Almost surely, 2^{21212012221202} is an apocalyptic number.

21212012221202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21212012221202 is a deficient number, since it is larger than the sum of its proper divisors (13498553231710).

21212012221202 is a wasteful number, since it uses less digits than its factorization.

21212012221202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964182373704.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 21212012221202 its reverse (20212221021212), we get a palindrome (41424233242414).

The spelling of 21212012221202 in words is "twenty-one trillion, two hundred twelve billion, twelve million, two hundred twenty-one thousand, two hundred two".