210020101121 has 4 divisors (see below), whose sum is σ = 210118106112. Its totient is φ = 209922096132.

The previous prime is 210020101117. The next prime is 210020101153. The reversal of 210020101121 is 121101020012.

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 210020101121 - 2² = 210020101117 is a prime.

It is a super-3 number, since 3×210020101121³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210020101111) 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, 48999281 + ... + 49003566.

It is an arithmetic number, because the mean of its divisors is an integer number (52529526528).

Almost surely, 2^210020101121 is an apocalyptic number.

It is an amenable number.

210020101121 is a deficient number, since it is larger than the sum of its proper divisors (98004991).

210020101121 is an equidigital number, since it uses as much as digits as its factorization.

210020101121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98004990.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 210020101121 its reverse (121101020012), we get a palindrome (331121121133).

The spelling of 210020101121 in words is "two hundred ten billion, twenty million, one hundred one thousand, one hundred twenty-one".