2121313033101 has 4 divisors (see below), whose sum is σ = 2828417377472. Its totient is φ = 1414208688732.

The previous prime is 2121313033067. The next prime is 2121313033141. The reversal of 2121313033101 is 1013303131212.

It is a happy number.

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 not a de Polignac number, because 2121313033101 - 2¹⁴ = 2121313016717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121313033141) 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, 353552172181 + ... + 353552172186.

It is an arithmetic number, because the mean of its divisors is an integer number (707104344368).

Almost surely, 2^{2121313033101} is an apocalyptic number.

It is an amenable number.

2121313033101 is a deficient number, since it is larger than the sum of its proper divisors (707104344371).

2121313033101 is an equidigital number, since it uses as much as digits as its factorization.

2121313033101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707104344370.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 2121313033101 its reverse (1013303131212), we get a palindrome (3134616164313).

The spelling of 2121313033101 in words is "two trillion, one hundred twenty-one billion, three hundred thirteen million, thirty-three thousand, one hundred one".