121310202013 has 96 divisors (see below), whose sum is σ = 170229104640. Its totient is φ = 84031516800.

The previous prime is 121310202011. The next prime is 121310202037. The reversal of 121310202013 is 310202013121.

It is not a de Polignac number, because 121310202013 - 2¹ = 121310202011 is a prime.

It is a super-2 number, since 2×121310202013² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121310202011) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 81579756 + ... + 81581242.

It is an arithmetic number, because the mean of its divisors is an integer number (1773219840).

Almost surely, 2^121310202013 is an apocalyptic number.

121310202013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

121310202013 is a deficient number, since it is larger than the sum of its proper divisors (48918902627).

121310202013 is a wasteful number, since it uses less digits than its factorization.

121310202013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1799 (or 1788 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 121310202013 its reverse (310202013121), we get a palindrome (431512215134).

It can be divided in two parts, 121310 and 202013, that added together give a palindrome (323323).

The spelling of 121310202013 in words is "one hundred twenty-one billion, three hundred ten million, two hundred two thousand, thirteen".