210001101121 has 8 divisors (see below), whose sum is σ = 240618231360. Its totient is φ = 179538214128.

The previous prime is 210001101103. The next prime is 210001101137. The reversal of 210001101121 is 121101100012.

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

It is not a de Polignac number, because 210001101121 - 2³⁵ = 175641362753 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210001101098 and 210001101107.

It is not an unprimeable number, because it can be changed into a prime (210001101181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38557891 + ... + 38563336.

It is an arithmetic number, because the mean of its divisors is an integer number (30077278920).

Almost surely, 2^210001101121 is an apocalyptic number.

It is an amenable number.

210001101121 is a deficient number, since it is larger than the sum of its proper divisors (30617130239).

210001101121 is an equidigital number, since it uses as much as digits as its factorization.

210001101121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77121623.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 210001101121 its reverse (121101100012), we get a palindrome (331102201133).

The spelling of 210001101121 in words is "two hundred ten billion, one million, one hundred one thousand, one hundred twenty-one".