2121322011 has 8 divisors (see below), whose sum is σ = 2829195264. Its totient is φ = 1413831720.

The previous prime is 2121321989. The next prime is 2121322043. The reversal of 2121322011 is 1102231212.

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

It is not a de Polignac number, because 2121322011 - 2¹⁵ = 2121289243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2121322061) 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, 82555 + ... + 105156.

It is an arithmetic number, because the mean of its divisors is an integer number (353649408).

Almost surely, 2^2121322011 is an apocalyptic number.

2121322011 is a deficient number, since it is larger than the sum of its proper divisors (707873253).

2121322011 is a wasteful number, since it uses less digits than its factorization.

2121322011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191481.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2121322011 is about 46057.8116175747. The cubic root of 2121322011 is about 1284.8986300853.

Adding to 2121322011 its reverse (1102231212), we get a palindrome (3223553223).

The spelling of 2121322011 in words is "two billion, one hundred twenty-one million, three hundred twenty-two thousand, eleven".