1011020211987 has 8 divisors (see below), whose sum is σ = 1348046151120. Its totient is φ = 674003873760.

The previous prime is 1011020211973. The next prime is 1011020212003. The reversal of 1011020211987 is 7891120201101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1011020211987 - 2¹¹ = 1011020209939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1011020210987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2150812 + ... + 2578377.

It is an arithmetic number, because the mean of its divisors is an integer number (168505768890).

Almost surely, 2^{1011020211987} is an apocalyptic number.

1011020211987 is a deficient number, since it is larger than the sum of its proper divisors (337025939133).

1011020211987 is an equidigital number, since it uses as much as digits as its factorization.

1011020211987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4800453.

The product of its (nonzero) digits is 2016, while the sum is 33.

The spelling of 1011020211987 in words is "one trillion, eleven billion, twenty million, two hundred eleven thousand, nine hundred eighty-seven".