10201221011 has 4 divisors (see below), whose sum is σ = 10738127400. Its totient is φ = 9664314624.

The previous prime is 10201221007. The next prime is 10201221013. The reversal of 10201221011 is 11012210201.

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 10201221011 - 2² = 10201221007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10201220983 and 10201221001.

It is not an unprimeable number, because it can be changed into a prime (10201221013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268453166 + ... + 268453203.

It is an arithmetic number, because the mean of its divisors is an integer number (2684531850).

Almost surely, 2^10201221011 is an apocalyptic number.

10201221011 is a deficient number, since it is larger than the sum of its proper divisors (536906389).

10201221011 is an equidigital number, since it uses as much as digits as its factorization.

10201221011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536906388.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 10201221011 its reverse (11012210201), we get a palindrome (21213431212).

The spelling of 10201221011 in words is "ten billion, two hundred one million, two hundred twenty-one thousand, eleven".