221012211002101 has 2 divisors, whose sum is σ = 221012211002102. Its totient is φ = 221012211002100.

The previous prime is 221012211002081. The next prime is 221012211002227. The reversal of 221012211002101 is 101200112210122.

221012211002101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 209825393593201 + 11186817408900 = 14485351^2 + 3344670^2 .

It is a cyclic number.

It is not a de Polignac number, because 221012211002101 - 2²³ = 221012202613493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221012211008101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110506105501050 + 110506105501051.

It is an arithmetic number, because the mean of its divisors is an integer number (110506105501051).

Almost surely, 2^{221012211002101} is an apocalyptic number.

It is an amenable number.

221012211002101 is a deficient number, since it is larger than the sum of its proper divisors (1).

221012211002101 is an equidigital number, since it uses as much as digits as its factorization.

221012211002101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 221012211002101 its reverse (101200112210122), we get a palindrome (322212323212223).

The spelling of 221012211002101 in words is "two hundred twenty-one trillion, twelve billion, two hundred eleven million, two thousand, one hundred one".