220220021099987 has 2 divisors, whose sum is σ = 220220021099988. Its totient is φ = 220220021099986.

The previous prime is 220220021099951. The next prime is 220220021100019. The reversal of 220220021099987 is 789990120022022.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220220021099987 is a prime.

It is not a weakly prime, because it can be changed into another prime (220220021099387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110110010549993 + 110110010549994.

It is an arithmetic number, because the mean of its divisors is an integer number (110110010549994).

Almost surely, 2^{220220021099987} is an apocalyptic number.

220220021099987 is a deficient number, since it is larger than the sum of its proper divisors (1).

220220021099987 is an equidigital number, since it uses as much as digits as its factorization.

220220021099987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1306368, while the sum is 53.

The spelling of 220220021099987 in words is "two hundred twenty trillion, two hundred twenty billion, twenty-one million, ninety-nine thousand, nine hundred eighty-seven".