221200011101087 has 2 divisors, whose sum is σ = 221200011101088. Its totient is φ = 221200011101086.

The previous prime is 221200011101081. The next prime is 221200011101101. The reversal of 221200011101087 is 780101110002122.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221200011101087 - 2⁴⁰ = 220100499473311 is a prime.

It is a super-2 number, since 2×221200011101087² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221200011101081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110600005550543 + 110600005550544.

It is an arithmetic number, because the mean of its divisors is an integer number (110600005550544).

Almost surely, 2^{221200011101087} is an apocalyptic number.

221200011101087 is a deficient number, since it is larger than the sum of its proper divisors (1).

221200011101087 is an equidigital number, since it uses as much as digits as its factorization.

221200011101087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 26.

The spelling of 221200011101087 in words is "two hundred twenty-one trillion, two hundred billion, eleven million, one hundred one thousand, eighty-seven".