2121221011213 has 8 divisors (see below), whose sum is σ = 2170687483008. Its totient is φ = 2071760709984.

The previous prime is 2121221011207. The next prime is 2121221011243. The reversal of 2121221011213 is 3121101221212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2121221011213 - 2⁵ = 2121221011181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121221011243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 843445 + ... + 2225722.

It is an arithmetic number, because the mean of its divisors is an integer number (271335935376).

Almost surely, 2^{2121221011213} is an apocalyptic number.

It is an amenable number.

2121221011213 is a deficient number, since it is larger than the sum of its proper divisors (49466471795).

2121221011213 is a wasteful number, since it uses less digits than its factorization.

2121221011213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3085283.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 2121221011213 its reverse (3121101221212), we get a palindrome (5242322232425).

The spelling of 2121221011213 in words is "two trillion, one hundred twenty-one billion, two hundred twenty-one million, eleven thousand, two hundred thirteen".