210210104121 has 4 divisors (see below), whose sum is σ = 280280138832. Its totient is φ = 140140069412.

The previous prime is 210210104119. The next prime is 210210104173. The reversal of 210210104121 is 121401012012.

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 210210104121 - 2¹ = 210210104119 is a prime.

It is a super-2 number, since 2×210210104121² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 210210104121.

It is not an unprimeable number, because it can be changed into a prime (210210102121) 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, 35035017351 + ... + 35035017356.

It is an arithmetic number, because the mean of its divisors is an integer number (70070034708).

Almost surely, 2^210210104121 is an apocalyptic number.

It is an amenable number.

210210104121 is a deficient number, since it is larger than the sum of its proper divisors (70070034711).

210210104121 is an equidigital number, since it uses as much as digits as its factorization.

210210104121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70070034710.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 210210104121 its reverse (121401012012), we get a palindrome (331611116133).

The spelling of 210210104121 in words is "two hundred ten billion, two hundred ten million, one hundred four thousand, one hundred twenty-one".