222121201009193 has 2 divisors, whose sum is σ = 222121201009194. Its totient is φ = 222121201009192.

The previous prime is 222121201009157. The next prime is 222121201009199. The reversal of 222121201009193 is 391900102121222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 206213132575129 + 15908068434064 = 14360123^2 + 3988492^2 .

It is a cyclic number.

It is not a de Polignac number, because 222121201009193 - 2⁸ = 222121201008937 is a prime.

It is a super-2 number, since 2×222121201009193² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (222121201009199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111060600504596 + 111060600504597.

It is an arithmetic number, because the mean of its divisors is an integer number (111060600504597).

Almost surely, 2^{222121201009193} is an apocalyptic number.

It is an amenable number.

222121201009193 is a deficient number, since it is larger than the sum of its proper divisors (1).

222121201009193 is an equidigital number, since it uses as much as digits as its factorization.

222121201009193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 35.

The spelling of 222121201009193 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, two hundred one million, nine thousand, one hundred ninety-three".