21222010190111 has 2 divisors, whose sum is σ = 21222010190112. Its totient is φ = 21222010190110.

The previous prime is 21222010190089. The next prime is 21222010190119. The reversal of 21222010190111 is 11109101022212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21222010190111 - 2¹⁰ = 21222010189087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21222010190119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10611005095055 + 10611005095056.

It is an arithmetic number, because the mean of its divisors is an integer number (10611005095056).

Almost surely, 2^{21222010190111} is an apocalyptic number.

21222010190111 is a deficient number, since it is larger than the sum of its proper divisors (1).

21222010190111 is an equidigital number, since it uses as much as digits as its factorization.

21222010190111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 23.

The spelling of 21222010190111 in words is "twenty-one trillion, two hundred twenty-two billion, ten million, one hundred ninety thousand, one hundred eleven".