210100211112221 has 16 divisors (see below), whose sum is σ = 216667406379648. Its totient is φ = 203601939552000.

The previous prime is 210100211112167. The next prime is 210100211112251. The reversal of 210100211112221 is 122211112001012.

It is a cyclic number.

It is not a de Polignac number, because 210100211112221 - 2¹⁴ = 210100211095837 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 210100211112221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210100211112251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75759146 + ... + 78483428.

It is an arithmetic number, because the mean of its divisors is an integer number (13541712898728).

Almost surely, 2^{210100211112221} is an apocalyptic number.

It is an amenable number.

210100211112221 is a deficient number, since it is larger than the sum of its proper divisors (6567195267427).

210100211112221 is a wasteful number, since it uses less digits than its factorization.

210100211112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2736932.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 210100211112221 its reverse (122211112001012), we get a palindrome (332311323113233).

The spelling of 210100211112221 in words is "two hundred ten trillion, one hundred billion, two hundred eleven million, one hundred twelve thousand, two hundred twenty-one".