1020201201993 has 4 divisors (see below), whose sum is σ = 1360268269328. Its totient is φ = 680134134660.

The previous prime is 1020201201979. The next prime is 1020201202073. The reversal of 1020201201993 is 3991021020201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1020201201993 - 2⁸ = 1020201201737 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1020201201993.

It is not an unprimeable number, because it can be changed into a prime (1020201201913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170033533663 + ... + 170033533668.

It is an arithmetic number, because the mean of its divisors is an integer number (340067067332).

Almost surely, 2^{1020201201993} is an apocalyptic number.

It is an amenable number.

1020201201993 is a deficient number, since it is larger than the sum of its proper divisors (340067067335).

1020201201993 is an equidigital number, since it uses as much as digits as its factorization.

1020201201993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340067067334.

The product of its (nonzero) digits is 1944, while the sum is 30.

The spelling of 1020201201993 in words is "one trillion, twenty billion, two hundred one million, two hundred one thousand, nine hundred ninety-three".