21220121000210 has 64 divisors (see below), whose sum is σ = 41715957744000. Its totient is φ = 7707642862080.

The previous prime is 21220121000159. The next prime is 21220121000233. The reversal of 21220121000210 is 1200012102212.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 364872494 + ... + 364930646.

It is an arithmetic number, because the mean of its divisors is an integer number (651811839750).

Almost surely, 2^{21220121000210} is an apocalyptic number.

21220121000210 is a deficient number, since it is larger than the sum of its proper divisors (20495836743790).

21220121000210 is a wasteful number, since it uses less digits than its factorization.

21220121000210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61883.

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

Adding to 21220121000210 its reverse (1200012102212), we get a palindrome (22420133102422).

The spelling of 21220121000210 in words is "twenty-one trillion, two hundred twenty billion, one hundred twenty-one million, two hundred ten", and thus it is an aban number.