21201210001102 has 8 divisors (see below), whose sum is σ = 32052222994176. Its totient is φ = 10517135669712.

The previous prime is 21201210001087. The next prime is 21201210001109. The reversal of 21201210001102 is 20110001210212.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21201210001109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41734665103 + ... + 41734665610.

It is an arithmetic number, because the mean of its divisors is an integer number (4006527874272).

Almost surely, 2^{21201210001102} is an apocalyptic number.

21201210001102 is a deficient number, since it is larger than the sum of its proper divisors (10851012993074).

21201210001102 is a wasteful number, since it uses less digits than its factorization.

21201210001102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83469330842.

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

Adding to 21201210001102 its reverse (20110001210212), we get a palindrome (41311211211314).

The spelling of 21201210001102 in words is "twenty-one trillion, two hundred one billion, two hundred ten million, one thousand, one hundred two".