221110101941 has 2 divisors, whose sum is σ = 221110101942. Its totient is φ = 221110101940.

The previous prime is 221110101889. The next prime is 221110102009. The reversal of 221110101941 is 149101011122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 180670902916 + 40439199025 = 425054^2 + 201095^2 .

It is a cyclic number.

It is not a de Polignac number, because 221110101941 - 2²⁶ = 221042993077 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221110101841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110555050970 + 110555050971.

It is an arithmetic number, because the mean of its divisors is an integer number (110555050971).

Almost surely, 2^221110101941 is an apocalyptic number.

It is an amenable number.

221110101941 is a deficient number, since it is larger than the sum of its proper divisors (1).

221110101941 is an equidigital number, since it uses as much as digits as its factorization.

221110101941 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 23.

The spelling of 221110101941 in words is "two hundred twenty-one billion, one hundred ten million, one hundred one thousand, nine hundred forty-one".