102220087 has 2 divisors, whose sum is σ = 102220088. Its totient is φ = 102220086.

The previous prime is 102220039. The next prime is 102220123. The reversal of 102220087 is 780022201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102220087 - 2⁷ = 102219959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102220007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51110043 + 51110044.

It is an arithmetic number, because the mean of its divisors is an integer number (51110044).

Almost surely, 2^102220087 is an apocalyptic number.

102220087 is a deficient number, since it is larger than the sum of its proper divisors (1).

102220087 is an equidigital number, since it uses as much as digits as its factorization.

102220087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 102220087 is about 10110.3949972293. The cubic root of 102220087 is about 467.5686833230.

Adding to 102220087 its reverse (780022201), we get a palindrome (882242288).

The spelling of 102220087 in words is "one hundred two million, two hundred twenty thousand, eighty-seven".