221210010210011 has 4 divisors (see below), whose sum is σ = 224511652153512. Its totient is φ = 217908368266512.

The previous prime is 221210010209989. The next prime is 221210010210031. The reversal of 221210010210011 is 110012010012122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221210010210011 is a prime.

It is a super-2 number, since 2×221210010210011² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221210010210031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1650820971650 + ... + 1650820971783.

It is an arithmetic number, because the mean of its divisors is an integer number (56127913038378).

Almost surely, 2^{221210010210011} is an apocalyptic number.

221210010210011 is a deficient number, since it is larger than the sum of its proper divisors (3301641943501).

221210010210011 is an equidigital number, since it uses as much as digits as its factorization.

221210010210011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3301641943500.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 221210010210011 its reverse (110012010012122), we get a palindrome (331222020222133).

The spelling of 221210010210011 in words is "two hundred twenty-one trillion, two hundred ten billion, ten million, two hundred ten thousand, eleven".