2213210121242 has 4 divisors (see below), whose sum is σ = 3319815181866. Its totient is φ = 1106605060620.

The previous prime is 2213210121193. The next prime is 2213210121251. The reversal of 2213210121242 is 2421210123122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2118739336921 + 94470784321 = 1455589^2 + 307361^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 553302530309 + ... + 553302530312.

Almost surely, 2^{2213210121242} is an apocalyptic number.

2213210121242 is a deficient number, since it is larger than the sum of its proper divisors (1106605060624).

2213210121242 is a wasteful number, since it uses less digits than its factorization.

2213210121242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1106605060623.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 2213210121242 its reverse (2421210123122), we get a palindrome (4634420244364).

The spelling of 2213210121242 in words is "two trillion, two hundred thirteen billion, two hundred ten million, one hundred twenty-one thousand, two hundred forty-two".