222221211011011 has 2 divisors, whose sum is σ = 222221211011012. Its totient is φ = 222221211011010.

The previous prime is 222221211010999. The next prime is 222221211011021. The reversal of 222221211011011 is 110110112122222.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 222221211011011 - 2²¹ = 222221208913859 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222221211011011.

It is not a weakly prime, because it can be changed into another prime (222221211011021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111110605505505 + 111110605505506.

It is an arithmetic number, because the mean of its divisors is an integer number (111110605505506).

Almost surely, 2^{222221211011011} is an apocalyptic number.

222221211011011 is a deficient number, since it is larger than the sum of its proper divisors (1).

222221211011011 is an equidigital number, since it uses as much as digits as its factorization.

222221211011011 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 19.

Adding to 222221211011011 its reverse (110110112122222), we get a palindrome (332331323133233).

The spelling of 222221211011011 in words is "two hundred twenty-two trillion, two hundred twenty-one billion, two hundred eleven million, eleven thousand, eleven".