221220022101011 has 2 divisors, whose sum is σ = 221220022101012. Its totient is φ = 221220022101010.

The previous prime is 221220022100969. The next prime is 221220022101073. The reversal of 221220022101011 is 110101220022122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221220022101011 - 2¹⁰ = 221220022099987 is a prime.

It is not a weakly prime, because it can be changed into another prime (221220022101311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110610011050505 + 110610011050506.

It is an arithmetic number, because the mean of its divisors is an integer number (110610011050506).

Almost surely, 2^{221220022101011} is an apocalyptic number.

221220022101011 is a deficient number, since it is larger than the sum of its proper divisors (1).

221220022101011 is an equidigital number, since it uses as much as digits as its factorization.

221220022101011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221220022101011 its reverse (110101220022122), we get a palindrome (331321242123133).

The spelling of 221220022101011 in words is "two hundred twenty-one trillion, two hundred twenty billion, twenty-two million, one hundred one thousand, eleven".