210010121121 has 4 divisors (see below), whose sum is σ = 280013494832. Its totient is φ = 140006747412.

The previous prime is 210010121119. The next prime is 210010121143. The reversal of 210010121121 is 121121010012.

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 not a de Polignac number, because 210010121121 - 2¹ = 210010121119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210010121097 and 210010121106.

It is not an unprimeable number, because it can be changed into a prime (210010121171) 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, 35001686851 + ... + 35001686856.

It is an arithmetic number, because the mean of its divisors is an integer number (70003373708).

Almost surely, 2^210010121121 is an apocalyptic number.

It is an amenable number.

210010121121 is a deficient number, since it is larger than the sum of its proper divisors (70003373711).

210010121121 is an equidigital number, since it uses as much as digits as its factorization.

210010121121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70003373710.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 210010121121 its reverse (121121010012), we get a palindrome (331131131133).

The spelling of 210010121121 in words is "two hundred ten billion, ten million, one hundred twenty-one thousand, one hundred twenty-one".