221102101021097 has 2 divisors, whose sum is σ = 221102101021098. Its totient is φ = 221102101021096.

The previous prime is 221102101021079. The next prime is 221102101021141. The reversal of 221102101021097 is 790120101201122.

Together with previous prime (221102101021079) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 201714670511641 + 19387430509456 = 14202629^2 + 4403116^2 .

It is a cyclic number.

It is not a de Polignac number, because 221102101021097 - 2²⁴ = 221102084243881 is a prime.

It is a super-2 number, since 2×221102101021097² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (221102101021007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110551050510548 + 110551050510549.

It is an arithmetic number, because the mean of its divisors is an integer number (110551050510549).

Almost surely, 2^{221102101021097} is an apocalyptic number.

It is an amenable number.

221102101021097 is a deficient number, since it is larger than the sum of its proper divisors (1).

221102101021097 is an equidigital number, since it uses as much as digits as its factorization.

221102101021097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 29.

The spelling of 221102101021097 in words is "two hundred twenty-one trillion, one hundred two billion, one hundred one million, twenty-one thousand, ninety-seven".