1020020211959 has 16 divisors (see below), whose sum is σ = 1193496426816. Its totient is φ = 853692998400.

The previous prime is 1020020211943. The next prime is 1020020211961. The reversal of 1020020211959 is 9591120200201.

It is a cyclic number.

It is not a de Polignac number, because 1020020211959 - 2⁴ = 1020020211943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020020211059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8659772 + ... + 8776769.

It is an arithmetic number, because the mean of its divisors is an integer number (74593526676).

Almost surely, 2^{1020020211959} is an apocalyptic number.

1020020211959 is a deficient number, since it is larger than the sum of its proper divisors (173476214857).

1020020211959 is a wasteful number, since it uses less digits than its factorization.

1020020211959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17436746.

The product of its (nonzero) digits is 3240, while the sum is 32.

The spelling of 1020020211959 in words is "one trillion, twenty billion, twenty million, two hundred eleven thousand, nine hundred fifty-nine".