210121202013 has 16 divisors (see below), whose sum is σ = 281348121600. Its totient is φ = 139487822000.

The previous prime is 210121202003. The next prime is 210121202017. The reversal of 210121202013 is 310202121012.

210121202013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 210121202013 - 2⁶ = 210121201949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210121201983 and 210121202001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210121202017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3174268 + ... + 3239786.

It is an arithmetic number, because the mean of its divisors is an integer number (17584257600).

Almost surely, 2^210121202013 is an apocalyptic number.

It is an amenable number.

210121202013 is a deficient number, since it is larger than the sum of its proper divisors (71226919587).

210121202013 is a wasteful number, since it uses less digits than its factorization.

210121202013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70032.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 210121202013 its reverse (310202121012), we get a palindrome (520323323025).

The spelling of 210121202013 in words is "two hundred ten billion, one hundred twenty-one million, two hundred two thousand, thirteen".