221202111019 has 2 divisors, whose sum is σ = 221202111020. Its totient is φ = 221202111018.

The previous prime is 221202111017. The next prime is 221202111041. The reversal of 221202111019 is 910111202122.

It is an a-pointer prime, because the next prime (221202111041) can be obtained adding 221202111019 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221202111019 - 2¹ = 221202111017 is a prime.

It is a super-2 number, since 2×221202111019² (a number of 23 digits) contains 22 as substring.

Together with 221202111017, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (221202111017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110601055509 + 110601055510.

It is an arithmetic number, because the mean of its divisors is an integer number (110601055510).

Almost surely, 2^221202111019 is an apocalyptic number.

221202111019 is a deficient number, since it is larger than the sum of its proper divisors (1).

221202111019 is an equidigital number, since it uses as much as digits as its factorization.

221202111019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 221202111019 in words is "two hundred twenty-one billion, two hundred two million, one hundred eleven thousand, nineteen".