221102102000977 has 2 divisors, whose sum is σ = 221102102000978. Its totient is φ = 221102102000976.

The previous prime is 221102102000951. The next prime is 221102102001019. The reversal of 221102102000977 is 779000201201122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 221087042048016 + 15059952961 = 14868996^2 + 122719^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221102102000977 is a prime.

It is a super-2 number, since 2×221102102000977² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (221102102000677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110551051000488 + 110551051000489.

It is an arithmetic number, because the mean of its divisors is an integer number (110551051000489).

Almost surely, 2^{221102102000977} is an apocalyptic number.

It is an amenable number.

221102102000977 is a deficient number, since it is larger than the sum of its proper divisors (1).

221102102000977 is an equidigital number, since it uses as much as digits as its factorization.

221102102000977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 34.

The spelling of 221102102000977 in words is "two hundred twenty-one trillion, one hundred two billion, one hundred two million, nine hundred seventy-seven", and thus it is an aban number.