21010001221102 has 8 divisors (see below), whose sum is σ = 31522690305000. Its totient is φ = 10502437786104.

The previous prime is 21010001221061. The next prime is 21010001221127. The reversal of 21010001221102 is 20112210001012.

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

It is a congruent number.

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, 1281401977 + ... + 1281418372.

It is an arithmetic number, because the mean of its divisors is an integer number (3940336288125).

Almost surely, 2^{21010001221102} is an apocalyptic number.

21010001221102 is a deficient number, since it is larger than the sum of its proper divisors (10512689083898).

21010001221102 is a wasteful number, since it uses less digits than its factorization.

21010001221102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2562824450.

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

Adding to 21010001221102 its reverse (20112210001012), we get a palindrome (41122211222114).

The spelling of 21010001221102 in words is "twenty-one trillion, ten billion, one million, two hundred twenty-one thousand, one hundred two".