102021020001987 has 8 divisors (see below), whose sum is σ = 136028327838480. Its totient is φ = 68013862750080.

The previous prime is 102021020001977. The next prime is 102021020002007. The reversal of 102021020001987 is 789100020120201.

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

It is not a de Polignac number, because 102021020001987 - 2⁸ = 102021020001731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102021020001947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36055714 + ... + 38782167.

It is an arithmetic number, because the mean of its divisors is an integer number (17003540979810).

Almost surely, 2^{102021020001987} is an apocalyptic number.

102021020001987 is a deficient number, since it is larger than the sum of its proper divisors (34007307836493).

102021020001987 is an equidigital number, since it uses as much as digits as its factorization.

102021020001987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75292293.

The product of its (nonzero) digits is 4032, while the sum is 33.

The spelling of 102021020001987 in words is "one hundred two trillion, twenty-one billion, twenty million, one thousand, nine hundred eighty-seven".