220021221101887 has 2 divisors, whose sum is σ = 220021221101888. Its totient is φ = 220021221101886.

The previous prime is 220021221101873. The next prime is 220021221102029. The reversal of 220021221101887 is 788101122120022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220021221101887 - 2¹¹ = 220021221099839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220021221191887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110010610550943 + 110010610550944.

It is an arithmetic number, because the mean of its divisors is an integer number (110010610550944).

Almost surely, 2^{220021221101887} is an apocalyptic number.

220021221101887 is a deficient number, since it is larger than the sum of its proper divisors (1).

220021221101887 is an equidigital number, since it uses as much as digits as its factorization.

220021221101887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14336, while the sum is 37.

The spelling of 220021221101887 in words is "two hundred twenty trillion, twenty-one billion, two hundred twenty-one million, one hundred one thousand, eight hundred eighty-seven".