2121020002313 has 16 divisors (see below), whose sum is σ = 2247512436864. Its totient is φ = 1994720083200.

The previous prime is 2121020002307. The next prime is 2121020002337. The reversal of 2121020002313 is 3132000201212.

It is a cyclic number.

It is not a de Polignac number, because 2121020002313 - 2²⁰ = 2121018953737 is a prime.

It is a super-3 number, since 3×2121020002313³ (a number of 38 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2121020002291 and 2121020002300.

It is not an unprimeable number, because it can be changed into a prime (2121020002513) 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, 137266238 + ... + 137281688.

It is an arithmetic number, because the mean of its divisors is an integer number (140469527304).

Almost surely, 2^{2121020002313} is an apocalyptic number.

It is an amenable number.

2121020002313 is a deficient number, since it is larger than the sum of its proper divisors (126492434551).

2121020002313 is a wasteful number, since it uses less digits than its factorization.

2121020002313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21152.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 2121020002313 its reverse (3132000201212), we get a palindrome (5253020203525).

The spelling of 2121020002313 in words is "two trillion, one hundred twenty-one billion, twenty million, two thousand, three hundred thirteen".