210110101122221 has 16 divisors (see below), whose sum is σ = 222202069698048. Its totient is φ = 198361790827200.

The previous prime is 210110101122209. The next prime is 210110101122223. The reversal of 210110101122221 is 122221101011012.

It is a cyclic number.

It is not a de Polignac number, because 210110101122221 - 2¹⁴ = 210110101105837 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 210110101122221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210110101122223) 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, 94899506 + ... + 97088291.

It is an arithmetic number, because the mean of its divisors is an integer number (13887629356128).

Almost surely, 2^{210110101122221} is an apocalyptic number.

It is an amenable number.

210110101122221 is a deficient number, since it is larger than the sum of its proper divisors (12091968575827).

210110101122221 is a wasteful number, since it uses less digits than its factorization.

210110101122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191988692.

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

Adding to 210110101122221 its reverse (122221101011012), we get a palindrome (332331202133233).

The spelling of 210110101122221 in words is "two hundred ten trillion, one hundred ten billion, one hundred one million, one hundred twenty-two thousand, two hundred twenty-one".