221010221021011 has 2 divisors, whose sum is σ = 221010221021012. Its totient is φ = 221010221021010.

The previous prime is 221010221020943. The next prime is 221010221021081. The reversal of 221010221021011 is 110120122010122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221010221021011 - 2⁹ = 221010221020499 is a prime.

It is a super-2 number, since 2×221010221021011² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (221010221021081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110505110510505 + 110505110510506.

It is an arithmetic number, because the mean of its divisors is an integer number (110505110510506).

Almost surely, 2^{221010221021011} is an apocalyptic number.

221010221021011 is a deficient number, since it is larger than the sum of its proper divisors (1).

221010221021011 is an equidigital number, since it uses as much as digits as its factorization.

221010221021011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 221010221021011 its reverse (110120122010122), we get a palindrome (331130343031133).

The spelling of 221010221021011 in words is "two hundred twenty-one trillion, ten billion, two hundred twenty-one million, twenty-one thousand, eleven".