210221102121011 has 8 divisors (see below), whose sum is σ = 215349486702000. Its totient is φ = 205092767093760.

The previous prime is 210221102120987. The next prime is 210221102121029. The reversal of 210221102121011 is 110121201122012.

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

It is a cyclic number.

It is not a de Polignac number, because 210221102121011 - 2¹⁴ = 210221102104627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210221102120011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3727406 + ... + 20840723.

It is an arithmetic number, because the mean of its divisors is an integer number (26918685837750).

Almost surely, 2^{210221102121011} is an apocalyptic number.

210221102121011 is a deficient number, since it is larger than the sum of its proper divisors (5128384580989).

210221102121011 is a wasteful number, since it uses less digits than its factorization.

210221102121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24776869.

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

Adding to 210221102121011 its reverse (110121201122012), we get a palindrome (320342303243023).

The spelling of 210221102121011 in words is "two hundred ten trillion, two hundred twenty-one billion, one hundred two million, one hundred twenty-one thousand, eleven".