3121210212213 has 32 divisors (see below), whose sum is σ = 4253461632000. Its totient is φ = 2035132909056.

The previous prime is 3121210212209. The next prime is 3121210212259. The reversal of 3121210212213 is 3122120121213.

It is not a de Polignac number, because 3121210212213 - 2² = 3121210212209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3121210212213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121210212203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 315683356 + ... + 315693242.

It is an arithmetic number, because the mean of its divisors is an integer number (132920676000).

Almost surely, 2^{3121210212213} is an apocalyptic number.

It is an amenable number.

3121210212213 is a deficient number, since it is larger than the sum of its proper divisors (1132251419787).

3121210212213 is a wasteful number, since it uses less digits than its factorization.

3121210212213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15981.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 3121210212213 its reverse (3122120121213), we get a palindrome (6243330333426).

The spelling of 3121210212213 in words is "three trillion, one hundred twenty-one billion, two hundred ten million, two hundred twelve thousand, two hundred thirteen".