2121213310 has 32 divisors (see below), whose sum is σ = 3914803872. Its totient is φ = 827051520.

The previous prime is 2121213271. The next prime is 2121213313. The reversal of 2121213310 is 133121212.

It is a super-2 number, since 2×2121213310² = 8999091813042312200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121213313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 780514 + ... + 783226.

It is an arithmetic number, because the mean of its divisors is an integer number (122337621).

Almost surely, 2^2121213310 is an apocalyptic number.

2121213310 is a deficient number, since it is larger than the sum of its proper divisors (1793590562).

2121213310 is a wasteful number, since it uses less digits than its factorization.

2121213310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4668.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2121213310 is about 46056.6315529045. The cubic root of 2121213310 is about 1284.8766827413.

Adding to 2121213310 its reverse (133121212), we get a palindrome (2254334522).

The spelling of 2121213310 in words is "two billion, one hundred twenty-one million, two hundred thirteen thousand, three hundred ten".