22010111100221 has 2 divisors, whose sum is σ = 22010111100222. Its totient is φ = 22010111100220.

The previous prime is 22010111100199. The next prime is 22010111100287. The reversal of 22010111100221 is 12200111101022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16760926068121 + 5249185032100 = 4094011^2 + 2291110^2 .

It is a cyclic number.

It is not a de Polignac number, because 22010111100221 - 2¹⁴ = 22010111083837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22010111100196 and 22010111100205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22010111100521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11005055550110 + 11005055550111.

It is an arithmetic number, because the mean of its divisors is an integer number (11005055550111).

Almost surely, 2^{22010111100221} is an apocalyptic number.

It is an amenable number.

22010111100221 is a deficient number, since it is larger than the sum of its proper divisors (1).

22010111100221 is an equidigital number, since it uses as much as digits as its factorization.

22010111100221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 22010111100221 its reverse (12200111101022), we get a palindrome (34210222201243).

The spelling of 22010111100221 in words is "twenty-two trillion, ten billion, one hundred eleven million, one hundred thousand, two hundred twenty-one".