210120001121 has 16 divisors (see below), whose sum is σ = 213897438720. Its totient is φ = 206378557440.

The previous prime is 210120001103. The next prime is 210120001123. The reversal of 210120001121 is 121100021012.

It is a cyclic number.

It is not a de Polignac number, because 210120001121 - 2⁶ = 210120001057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210120001123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8381876 + ... + 8406906.

It is an arithmetic number, because the mean of its divisors is an integer number (13368589920).

Almost surely, 2^210120001121 is an apocalyptic number.

It is an amenable number.

210120001121 is a deficient number, since it is larger than the sum of its proper divisors (3777437599).

210120001121 is a wasteful number, since it uses less digits than its factorization.

210120001121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25744.

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

Adding to 210120001121 its reverse (121100021012), we get a palindrome (331220022133).

The spelling of 210120001121 in words is "two hundred ten billion, one hundred twenty million, one thousand, one hundred twenty-one".