221121201000210 has 64 divisors (see below), whose sum is σ = 606999781158912. Its totient is φ = 50500662503616.

The previous prime is 221121201000061. The next prime is 221121201000299. The reversal of 221121201000210 is 12000102121122.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 221121201000210.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 430224814 + ... + 430738473.

It is an arithmetic number, because the mean of its divisors is an integer number (9484371580608).

Almost surely, 2^{221121201000210} is an apocalyptic number.

221121201000210 is an abundant number, since it is smaller than the sum of its proper divisors (385878580158702).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221121201000210 is a wasteful number, since it uses less digits than its factorization.

221121201000210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860964527.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 221121201000210 its reverse (12000102121122), we get a palindrome (233121303121332).

The spelling of 221121201000210 in words is "two hundred twenty-one trillion, one hundred twenty-one billion, two hundred one million, two hundred ten", and thus it is an aban number.