10021221201011 has 4 divisors (see below), whose sum is σ = 10366780552800. Its totient is φ = 9675661849224.

The previous prime is 10021221200993. The next prime is 10021221201133. The reversal of 10021221201011 is 11010212212001.

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

It is a cyclic number.

It is not a de Polignac number, because 10021221201011 - 2²² = 10021217006707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10021221204011) 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, 172779675851 + ... + 172779675908.

It is an arithmetic number, because the mean of its divisors is an integer number (2591695138200).

Almost surely, 2^{10021221201011} is an apocalyptic number.

10021221201011 is a deficient number, since it is larger than the sum of its proper divisors (345559351789).

10021221201011 is an equidigital number, since it uses as much as digits as its factorization.

10021221201011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345559351788.

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

Adding to 10021221201011 its reverse (11010212212001), we get a palindrome (21031433413012).

The spelling of 10021221201011 in words is "ten trillion, twenty-one billion, two hundred twenty-one million, two hundred one thousand, eleven".