10021221211011 has 4 divisors (see below), whose sum is σ = 13361628281352. Its totient is φ = 6680814140672.

The previous prime is 10021221210983. The next prime is 10021221211013. The reversal of 10021221211011 is 11011212212001.

It is a happy number.

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 10021221211011 - 2⁹ = 10021221210499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10021221211013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1670203535166 + ... + 1670203535171.

It is an arithmetic number, because the mean of its divisors is an integer number (3340407070338).

Almost surely, 2^{10021221211011} is an apocalyptic number.

10021221211011 is a deficient number, since it is larger than the sum of its proper divisors (3340407070341).

10021221211011 is an equidigital number, since it uses as much as digits as its factorization.

10021221211011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3340407070340.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 10021221211011 its reverse (11011212212001), we get a palindrome (21032433423012).

The spelling of 10021221211011 in words is "ten trillion, twenty-one billion, two hundred twenty-one million, two hundred eleven thousand, eleven".