2102221021097 has 2 divisors, whose sum is σ = 2102221021098. Its totient is φ = 2102221021096.

The previous prime is 2102221021093. The next prime is 2102221021123. The reversal of 2102221021097 is 7901201222012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1060067923216 + 1042153097881 = 1029596^2 + 1020859^2 .

It is a cyclic number.

It is not a de Polignac number, because 2102221021097 - 2² = 2102221021093 is a prime.

It is a super-2 number, since 2×2102221021097² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2102221021093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051110510548 + 1051110510549.

It is an arithmetic number, because the mean of its divisors is an integer number (1051110510549).

Almost surely, 2^{2102221021097} is an apocalyptic number.

It is an amenable number.

2102221021097 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102221021097 is an equidigital number, since it uses as much as digits as its factorization.

2102221021097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 29.

The spelling of 2102221021097 in words is "two trillion, one hundred two billion, two hundred twenty-one million, twenty-one thousand, ninety-seven".