211220200987 has 2 divisors, whose sum is σ = 211220200988. Its totient is φ = 211220200986.

The previous prime is 211220200973. The next prime is 211220200993. The reversal of 211220200987 is 789002022112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211220200987 - 2¹¹ = 211220198939 is a prime.

It is a super-2 number, since 2×211220200987² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (211220200927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105610100493 + 105610100494.

It is an arithmetic number, because the mean of its divisors is an integer number (105610100494).

Almost surely, 2^211220200987 is an apocalyptic number.

211220200987 is a deficient number, since it is larger than the sum of its proper divisors (1).

211220200987 is an equidigital number, since it uses as much as digits as its factorization.

211220200987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 34.

The spelling of 211220200987 in words is "two hundred eleven billion, two hundred twenty million, two hundred thousand, nine hundred eighty-seven".