222221012120101 has 2 divisors, whose sum is σ = 222221012120102. Its totient is φ = 222221012120100.

The previous prime is 222221012120087. The next prime is 222221012120167. The reversal of 222221012120101 is 101021210122222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 217916673524001 + 4304338596100 = 14762001^2 + 2074690^2 .

It is a cyclic number.

It is not a de Polignac number, because 222221012120101 - 2⁴¹ = 220021988864549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222221012120501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111110506060050 + 111110506060051.

It is an arithmetic number, because the mean of its divisors is an integer number (111110506060051).

Almost surely, 2^{222221012120101} is an apocalyptic number.

It is an amenable number.

222221012120101 is a deficient number, since it is larger than the sum of its proper divisors (1).

222221012120101 is an equidigital number, since it uses as much as digits as its factorization.

222221012120101 is an odious number, because the sum of its binary digits is odd.

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

Adding to 222221012120101 its reverse (101021210122222), we get a palindrome (323242222242323).

The spelling of 222221012120101 in words is "two hundred twenty-two trillion, two hundred twenty-one billion, twelve million, one hundred twenty thousand, one hundred one".