1020012100987 has 8 divisors (see below), whose sum is σ = 1117516186800. Its totient is φ = 923303967360.

The previous prime is 1020012100973. The next prime is 1020012101027. The reversal of 1020012100987 is 7890012100201.

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

It is a cyclic number.

It is not a de Polignac number, because 1020012100987 - 2⁷ = 1020012100859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020012100487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198985362 + ... + 198990487.

It is an arithmetic number, because the mean of its divisors is an integer number (139689523350).

Almost surely, 2^{1020012100987} is an apocalyptic number.

1020012100987 is a deficient number, since it is larger than the sum of its proper divisors (97504085813).

1020012100987 is a wasteful number, since it uses less digits than its factorization.

1020012100987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397976093.

The product of its (nonzero) digits is 2016, while the sum is 31.

The spelling of 1020012100987 in words is "one trillion, twenty billion, twelve million, one hundred thousand, nine hundred eighty-seven".