2012020111987 has 4 divisors (see below), whose sum is σ = 2012468927560. Its totient is φ = 2011571296416.

The previous prime is 2012020111979. The next prime is 2012020112009. The reversal of 2012020111987 is 7891110202102.

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 2012020111987 - 2³ = 2012020111979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2012021111987) 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, 224401062 + ... + 224410027.

It is an arithmetic number, because the mean of its divisors is an integer number (503117231890).

Almost surely, 2^{2012020111987} is an apocalyptic number.

2012020111987 is a deficient number, since it is larger than the sum of its proper divisors (448815573).

2012020111987 is an equidigital number, since it uses as much as digits as its factorization.

2012020111987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448815572.

The product of its (nonzero) digits is 4032, while the sum is 34.

The spelling of 2012020111987 in words is "two trillion, twelve billion, twenty million, one hundred eleven thousand, nine hundred eighty-seven".