1020201201987 has 32 divisors (see below), whose sum is σ = 1576271384064. Its totient is φ = 580061683200.

The previous prime is 1020201201979. The next prime is 1020201202073. The reversal of 1020201201987 is 7891021020201.

It is not a de Polignac number, because 1020201201987 - 2³ = 1020201201979 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (1020201201907) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2749228 + ... + 3098169.

It is an arithmetic number, because the mean of its divisors is an integer number (49258480752).

Almost surely, 2^{1020201201987} is an apocalyptic number.

1020201201987 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1020201201987 is a deficient number, since it is larger than the sum of its proper divisors (556070182077).

1020201201987 is a wasteful number, since it uses less digits than its factorization.

1020201201987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5847739.

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

The spelling of 1020201201987 in words is "one trillion, twenty billion, two hundred one million, two hundred one thousand, nine hundred eighty-seven".