210212221221101 has 8 divisors (see below), whose sum is σ = 231592942192608. Its totient is φ = 189209920090000.

The previous prime is 210212221221031. The next prime is 210212221221113. The reversal of 210212221221101 is 101122122212012.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210212221221101 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210212221121101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94604958935 + ... + 94604961156.

It is an arithmetic number, because the mean of its divisors is an integer number (28949117774076).

Almost surely, 2^{210212221221101} is an apocalyptic number.

It is an amenable number.

210212221221101 is a deficient number, since it is larger than the sum of its proper divisors (21380720971507).

210212221221101 is a wasteful number, since it uses less digits than its factorization.

210212221221101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189209920203.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 210212221221101 its reverse (101122122212012), we get a palindrome (311334343433113).

The spelling of 210212221221101 in words is "two hundred ten trillion, two hundred twelve billion, two hundred twenty-one million, two hundred twenty-one thousand, one hundred one".