2011220201987 has 4 divisors (see below), whose sum is σ = 2011257431376. Its totient is φ = 2011182972600.

The previous prime is 2011220201981. The next prime is 2011220201999. The reversal of 2011220201987 is 7891020221102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2011220201987 - 2¹⁴ = 2011220185603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2011220201981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18533543 + ... + 18641744.

It is an arithmetic number, because the mean of its divisors is an integer number (502814357844).

Almost surely, 2^{2011220201987} is an apocalyptic number.

2011220201987 is a deficient number, since it is larger than the sum of its proper divisors (37229389).

2011220201987 is an equidigital number, since it uses as much as digits as its factorization.

2011220201987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37229388.

The product of its (nonzero) digits is 8064, while the sum is 35.

The spelling of 2011220201987 in words is "two trillion, eleven billion, two hundred twenty million, two hundred one thousand, nine hundred eighty-seven".