210021201011121 has 8 divisors (see below), whose sum is σ = 283864271686560. Its totient is φ = 138096132171552.

The previous prime is 210021201011057. The next prime is 210021201011177. The reversal of 210021201011121 is 121110102120012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 210021201011121 - 2⁶ = 210021201011057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 210021201011121.

It is not an unprimeable number, because it can be changed into a prime (210021201013121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 479500458711 + ... + 479500459148.

It is an arithmetic number, because the mean of its divisors is an integer number (35483033960820).

Almost surely, 2^{210021201011121} is an apocalyptic number.

It is an amenable number.

210021201011121 is a deficient number, since it is larger than the sum of its proper divisors (73843070675439).

210021201011121 is an equidigital number, since it uses as much as digits as its factorization.

210021201011121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959000917935.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 210021201011121 its reverse (121110102120012), we get a palindrome (331131303131133).

The spelling of 210021201011121 in words is "two hundred ten trillion, twenty-one billion, two hundred one million, eleven thousand, one hundred twenty-one".