221120112001097 has 2 divisors, whose sum is σ = 221120112001098. Its totient is φ = 221120112001096.

The previous prime is 221120112001091. The next prime is 221120112001123. The reversal of 221120112001097 is 790100211021122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 220363010147641 + 757101853456 = 14844629^2 + 870116^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221120112001097 is a prime.

It is not a weakly prime, because it can be changed into another prime (221120112001091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110560056000548 + 110560056000549.

It is an arithmetic number, because the mean of its divisors is an integer number (110560056000549).

Almost surely, 2^{221120112001097} is an apocalyptic number.

It is an amenable number.

221120112001097 is a deficient number, since it is larger than the sum of its proper divisors (1).

221120112001097 is an equidigital number, since it uses as much as digits as its factorization.

221120112001097 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 221120112001097 in words is "two hundred twenty-one trillion, one hundred twenty billion, one hundred twelve million, one thousand, ninety-seven".