2121213452 has 6 divisors (see below), whose sum is σ = 3712123548. Its totient is φ = 1060606724.

The previous prime is 2121213431. The next prime is 2121213461. The reversal of 2121213452 is 2543121212.

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, 265151678 + ... + 265151685.

It is an arithmetic number, because the mean of its divisors is an integer number (618687258).

Almost surely, 2^2121213452 is an apocalyptic number.

It is an amenable number.

2121213452 is a deficient number, since it is larger than the sum of its proper divisors (1590910096).

2121213452 is a wasteful number, since it uses less digits than its factorization.

2121213452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530303367 (or 530303365 counting only the distinct ones).

The product of its digits is 960, while the sum is 23.

The square root of 2121213452 is about 46056.6330944849. The cubic root of 2121213452 is about 1284.8767114124.

Adding to 2121213452 its reverse (2543121212), we get a palindrome (4664334664).

The spelling of 2121213452 in words is "two billion, one hundred twenty-one million, two hundred thirteen thousand, four hundred fifty-two".