221010102011 has 8 divisors (see below), whose sum is σ = 221668493424. Its totient is φ = 220352611680.

The previous prime is 221010101993. The next prime is 221010102031. The reversal of 221010102011 is 110201010122.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221010102011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221010101983 and 221010102001.

It is not an unprimeable number, because it can be changed into a prime (221010102031) 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 7 ways as a sum of consecutive naturals, for example, 267605 + ... + 716681.

It is an arithmetic number, because the mean of its divisors is an integer number (27708561678).

Almost surely, 2^221010102011 is an apocalyptic number.

221010102011 is a deficient number, since it is larger than the sum of its proper divisors (658391413).

221010102011 is an equidigital number, since it uses as much as digits as its factorization.

221010102011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450541.

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

Adding to 221010102011 its reverse (110201010122), we get a palindrome (331211112133).

The spelling of 221010102011 in words is "two hundred twenty-one billion, ten million, one hundred two thousand, eleven".