221010001121011 has 2 divisors, whose sum is σ = 221010001121012. Its totient is φ = 221010001121010.

The previous prime is 221010001121009. The next prime is 221010001121051. The reversal of 221010001121011 is 110121100010122.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221010001121011 - 2¹ = 221010001121009 is a prime.

Together with 221010001121009, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 221010001120982 and 221010001121000.

It is not a weakly prime, because it can be changed into another prime (221010001121051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110505000560505 + 110505000560506.

It is an arithmetic number, because the mean of its divisors is an integer number (110505000560506).

Almost surely, 2^{221010001121011} is an apocalyptic number.

221010001121011 is a deficient number, since it is larger than the sum of its proper divisors (1).

221010001121011 is an equidigital number, since it uses as much as digits as its factorization.

221010001121011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 221010001121011 its reverse (110121100010122), we get a palindrome (331131101131133).

The spelling of 221010001121011 in words is "two hundred twenty-one trillion, ten billion, one million, one hundred twenty-one thousand, eleven".