22221202021111 has 2 divisors, whose sum is σ = 22221202021112. Its totient is φ = 22221202021110.

The previous prime is 22221202021091. The next prime is 22221202021133. The reversal of 22221202021111 is 11112020212222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22221202021111 - 2⁴¹ = 20022178765559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22221202021511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11110601010555 + 11110601010556.

It is an arithmetic number, because the mean of its divisors is an integer number (11110601010556).

Almost surely, 2^{22221202021111} is an apocalyptic number.

22221202021111 is a deficient number, since it is larger than the sum of its proper divisors (1).

22221202021111 is an equidigital number, since it uses as much as digits as its factorization.

22221202021111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 22221202021111 its reverse (11112020212222), we get a palindrome (33333222233333).

The spelling of 22221202021111 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred two million, twenty-one thousand, one hundred eleven".