100202201993 has 4 divisors (see below), whose sum is σ = 100250775168. Its totient is φ = 100153628820.

The previous prime is 100202201987. The next prime is 100202202041. The reversal of 100202201993 is 399102202001.

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 a cyclic number.

It is not a de Polignac number, because 100202201993 - 2¹⁴ = 100202185609 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (100202201923) 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, 24283493 + ... + 24287618.

It is an arithmetic number, because the mean of its divisors is an integer number (25062693792).

Almost surely, 2^100202201993 is an apocalyptic number.

It is an amenable number.

100202201993 is a deficient number, since it is larger than the sum of its proper divisors (48573175).

100202201993 is an equidigital number, since it uses as much as digits as its factorization.

100202201993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48573174.

The product of its (nonzero) digits is 1944, while the sum is 29.

Adding to 100202201993 its reverse (399102202001), we get a palindrome (499304403994).

The spelling of 100202201993 in words is "one hundred billion, two hundred two million, two hundred one thousand, nine hundred ninety-three".