221102121201079 has 2 divisors, whose sum is σ = 221102121201080. Its totient is φ = 221102121201078.

The previous prime is 221102121201077. The next prime is 221102121201133. The reversal of 221102121201079 is 970102121201122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221102121201079 - 2¹ = 221102121201077 is a prime.

It is a super-2 number, since 2×221102121201079² (a number of 29 digits) contains 22 as substring.

Together with 221102121201077, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 221102121201079.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221102121201077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110551060600539 + 110551060600540.

It is an arithmetic number, because the mean of its divisors is an integer number (110551060600540).

Almost surely, 2^{221102121201079} is an apocalyptic number.

221102121201079 is a deficient number, since it is larger than the sum of its proper divisors (1).

221102121201079 is an equidigital number, since it uses as much as digits as its factorization.

221102121201079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 31.

The spelling of 221102121201079 in words is "two hundred twenty-one trillion, one hundred two billion, one hundred twenty-one million, two hundred one thousand, seventy-nine".