200101123021 has 4 divisors (see below), whose sum is σ = 208801171872. Its totient is φ = 191401074172.

The previous prime is 200101122997. The next prime is 200101123037. The reversal of 200101123021 is 120321101002.

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 200101123021 - 2⁵ = 200101122989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200101122992 and 200101123010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200101123091) 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 3 ways as a sum of consecutive naturals, for example, 4350024391 + ... + 4350024436.

It is an arithmetic number, because the mean of its divisors is an integer number (52200292968).

Almost surely, 2^200101123021 is an apocalyptic number.

It is an amenable number.

200101123021 is a deficient number, since it is larger than the sum of its proper divisors (8700048851).

200101123021 is an equidigital number, since it uses as much as digits as its factorization.

200101123021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8700048850.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 200101123021 its reverse (120321101002), we get a palindrome (320422224023).

The spelling of 200101123021 in words is "two hundred billion, one hundred one million, one hundred twenty-three thousand, twenty-one".