222221021105201 has 2 divisors, whose sum is σ = 222221021105202. Its totient is φ = 222221021105200.

The previous prime is 222221021105143. The next prime is 222221021105219. The reversal of 222221021105201 is 102501120122222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 215874728040976 + 6346293064225 = 14692676^2 + 2519185^2 .

It is a cyclic number.

It is not a de Polignac number, because 222221021105201 - 2⁴² = 217822974594097 is a prime.

It is not a weakly prime, because it can be changed into another prime (222221021105221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111110510552600 + 111110510552601.

It is an arithmetic number, because the mean of its divisors is an integer number (111110510552601).

Almost surely, 2^{222221021105201} is an apocalyptic number.

It is an amenable number.

222221021105201 is a deficient number, since it is larger than the sum of its proper divisors (1).

222221021105201 is an equidigital number, since it uses as much as digits as its factorization.

222221021105201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 640, while the sum is 23.

Adding to 222221021105201 its reverse (102501120122222), we get a palindrome (324722141227423).

The spelling of 222221021105201 in words is "two hundred twenty-two trillion, two hundred twenty-one billion, twenty-one million, one hundred five thousand, two hundred one".