221101110001011 has 32 divisors (see below), whose sum is σ = 318726144864000. Its totient is φ = 135859364760960.

The previous prime is 221101110001003. The next prime is 221101110001021. The reversal of 221101110001011 is 110100011101122.

It is not a de Polignac number, because 221101110001011 - 2³ = 221101110001003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221101110001001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27250540 + ... + 34420838.

It is an arithmetic number, because the mean of its divisors is an integer number (9960192027000).

Almost surely, 2^{221101110001011} is an apocalyptic number.

221101110001011 is a deficient number, since it is larger than the sum of its proper divisors (97625034862989).

221101110001011 is a wasteful number, since it uses less digits than its factorization.

221101110001011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7184979.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 221101110001011 its reverse (110100011101122), we get a palindrome (331201121102133).

The spelling of 221101110001011 in words is "two hundred twenty-one trillion, one hundred one billion, one hundred ten million, one thousand, eleven".